Volume 8, Issue 2 (May 2023)                   JNFS 2023, 8(2): 234-245 | Back to browse issues page


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Eskandari S, Rashidimehr A, Mohammadi-Nasrabadi F, Salmani Y, Esfarjani F. The Role of Policymakers in Potential Strengthening to Improve the Safety of the Vegetable in the Supply Chain: SWOT Analysis during COVID-19. JNFS 2023; 8 (2) :234-245
URL: http://jnfs.ssu.ac.ir/article-1-506-en.html
Food and Nutrition Policy and Planning Research Department, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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The Role of Policymakers in Potential Strengthening to Improve the Safety of the Vegetable in the Supply Chain: SWOT Analysis during COVID-19


Soheyl Eskandari; PhD 1, Azadeh Rashidimehr; PhD 2, Fatemeh Mohammadi-Nasrabadi; PhD 3,
Yeganeh Salmani; MSc 3, Fatemeh Esfarjani; PhD *3

1 Food and Drug Laboratory Research Center, Food and Drug Administration, Ministry of Health and Medical Education, Tehran, Iran; 2 Department of Basic Sciences, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Lorestan; 3 Food and Nutrition Policy and Planning Research Department, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
ARTICLE INFO ABSTRACT
ORIGINAL ARTICLE
Background: Fresh vegetables can play an important role in health and food security. This study aimed to assess the safety of the vegetable supply chain in Iran during the COVID-19 pandemic by strengths, weaknesses, opportunities, and threats (SWOT) analysis. Methods: A mixed-methods study was conducted in two phases in 2021. First, in the cross-sectional study, 192 staff were randomly selected from five major centers of vegetable retail centers. Then, semi-structured interviews were done with ten stakeholders, and a SWOT analysis was completed.
Results: Half of the participants had desirable hygienic practices, 39.6% had acceptable, and 8.9% had weak practice scores. The practice of participants whose educational level was BSc and above was better than that of illiterates
(OR =15.38, 95% CI =1.61-14.57, P=0.01). SWOT analysis results identified a poor shelf-life of vegetables, weak technology in planting, harvesting, and distributing vegetables. Conclusion: Policymakers can utilize the practical solutions for taking action in the potential strengthening of vegetable safety in the supply chain to improve public health during the COVID-19 pandemic.


Keywords: Vegetable safety; Supply chain; COVID-19 pandemic; SWOT analysis; Health policy
Article history:
Received: 27 Oct 2021
Revised:12 Dec 2021
Accepted: 25 Dec 2021
*Corresponding author
fesfarjani@hotmail.com
f.esfarjani@sbmu.ac.ir.
National Nutrition and Food Technology Research Institute (NNFTRI), Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Postal code: 198161573
Tel: +98 9125496347

Introduction
The global production of fresh vegetables has increased by 30% over the last few years (Hess and Sutcliffe, 2018). Fresh vegetables play an important role in human nutrition due to their high nutrient content. They can also help to provide a healthy and balanced diet that prevents non-communicable diseases (NCDs), especially in developing countries (Septembre-Malaterre et al., 2018, Yahia et al., 2019). However, fresh and raw consumed vegetables are also increasingly being recognized as important vehicles for the transmission of human pathogens (Ramees et al., 2017).
Scientists are demonstrating the global consequences of the COVID-19 crisis for humanity, the economy, and consequently, food systems. Food researchers face many fundamental challenges to ensure food safety and food security (Galanakis, 2020). In the COVID-19 pandemic scenario, a new set of challenges forces the person to maintain a healthy diet (Aman and Masood, 2020). A reasonable approach to cope with the COVID-19 pandemic is to improve the immune system. Therefore, as immunity is a part of health and food and nutrition security, it has been recommended that people consume certain types of food that can improve their immune system like fresh vegetables, fruits, whole grains, and meat to combat COVID-19 (Khayyatzadeh, 2020).
One of the most important concerns of consumers is the food hazard caused by COVID-19 such as the possibility of contamination of food or food packaging with the virus (Malik et al., 2020, Rodriguez-Morales et al., 2020). Foodborne transmission of COVID-19 should be considered. The European :union: (EU) Commission has emphasized that the utilization of COVID-19 contaminated packaging by the staff creates a hazard for buyers (European Commission EC, 2020).
Food production is viewed as a fundamental service sector that should continue by any means and at any cost or under any situation despite a COVID-19 lockdown (Moura and Souza, 2020). The COVID-19 pandemic has compromised production chains and put nations on alert for providing potential food supply emergencies in the world (De Paulo Farias and de Araújo, 2020). There is an increasing concern that production limitations are negatively impacting our ability to meet the global demand for food (de Lima et al., 2018). The COVID-19 outbreak has started to upset food supply chains, and thus, has affected the households' livelihoods and diets. Farmers and consumers have been affected; however, the scope of the impacts is not yet known (Tamru et al., 2020).
Undoubtedly, the COVID-19 pandemic is not only a public health issue but also a food supply issue and brings significant health and economic emergencies. Therefore, it is important how it affects the vegetable sales and production industry (Hailu, 2020). Iran is among the top 10 countries in vegetable production distribution in the world (Food and Agriculture Organization, 2020). Another study in Ethiopia showed that the intake of vegetables amongst people has decreased during the COVID-19 outbreak (Tamru et al., 2020). This behavior of the participating households may be related to their fear of this food group infecting the household with COVID-19. Thus they sought canned food and avoided perishable food for sanitation purposes. A study in Iran demonstrated vulnerable populations in countries experiencing food insecurity, such as Iran during COVID- 19 pandemic, should be supported not just by providing medical care and personal protective equipment, but also with flexible safety nets and food-based intervention programs to respond to population needs (Pakravan-Charvadeh et al., 2021).
Demand for ready-to-eat food from food service markets has significantly increased, and factories have moved more towards food processing and preparation in Iran. However, restaurant sales have declined due to public fears and restricted religious ceremonies, celebrations, and parties (Hailu, 2020). While some activities are required to combat the spread of the illness, they will probably have significant impacts on vegetable producers and distributors. Therefore, to the best of the authors’ knowledge, this is the first study that employs strengths, weaknesses, opportunities, and threats (SWOT) analysis during the COVID-19 pandemic to help policymakers to make appropriate strategies and find practical solutions for improving vegetable safety in the supply chain.
Materials and Methods
Study design and population
 Phase I
The cross-sectional study was conducted among five major vegetable production, supply, and retail centers in the north, south, west, east, and center of Tehran, including 53 greengroceries and fresh vegetable markets, 41 vegetable shops, and 3 vegetable factories selected through cluster sampling. All participants aged >18 years working in the vegetable supply chain and had access to the WhatsApp messenger. The questionnaire was developed based on the Center for Disease Control and Prevention (CDC) and World Health Organization (WHO) guidance for food businesses under the COVID-19 pandemic condition (centers for disease control and prevention CDC, 2020, World Health Organization, 2020).
Data collection: The research team contacted the quality manager of each center to invite their staff to participate in this study by phone call and inform them about the research aim based on their consent. The participants were enrolled in the study through a non-probability sampling approach where participants were invited through phone or social media. Then, 214 people were contacted; 197 of them admitted to collaborate and the electronic questionnaire link was sent to them. All of the subjects filled out the form, and five of them were excluded because of the technical problem of the platform. Finally, 192 staff were selected from these centers. The questionnaire was completed through the online link sent to the participants by the WhatsApp messenger (Facebook, Inc., California, USA) from March to July 2021.
The first part of the questionnaire included the questions about the staff’s gender, age, educational level, workplace, and nationality. The second part of it consisted of:
  •  Two questions about the symptoms and tests of COVID-19 and having symptoms in the last two weeks. This section of the questionnaire was assessed using yes/no questions.
  • Eight 5-Likert-item questions about their practice related to COVID-19, with the responses of never, rarely, sometimes, often, and always, each rated 1–5, respectively. The scores were classified as weak [8-20], acceptable [20-30], desirable [30-40].
Validation and pilot study: The questionnaire was developed based on the CDC and WHO guidelines and reports on COVID-19 (centers for disease control and prevention CDC, 2020, World Health Organization, 2020). However, it was adjusted by a formerly distributed tool for the evaluation of practice toward the prevention of the pandemic. Before using the questionnaire, a pilot study was performed to evaluate its face and content validity by an expert panel and some people similar to the study participants. The reliability of the questionnaire was also assessed by retesting at a time interval of 20 days (European Commission EC, 2020). Four experts in food safety from Shahid Beheshti University of Medical Sciences Tehran, Iran were first asked to assess the questions. The final version of the questionnaire was obtained after eliminating the disagreed parts between the researchers.
Data analysis: The collected data were analyzed by using the SPSS software (ver. 26.0). Data were reported as frequencies (n), proportions (%), and means (±standard deviations) for variables. Chi-squared test was performed to assess the relationship between the variables. In addition, the relationship between the independent (demographic characteristics) and dependent (practice) variables was tested using the multivariate logistic regression analysis. The p-value less than 0.05 was considered statistically significant.
Phase II
In the second part, semi-structured interviews were conducted with 10 experts in the vegetable industry (three officers in the Ministry of Agriculture-Jihad, two faculty members in the food safety field, one manager of Tehran Central Fruit and Vegetable Market, two managers of vegetable factories, and two quality control managers), who were selected through purposive sampling. Four questions about their opinions on the SWOT of the vegetable supply chain were sent to the stakeholders through their email to determine the challenges of the vegetable supply chain by SWOT analysis.
The SWOT analysis is a method for investigating the internal and external environmental influencing factors in a project. The steps used in the SWOT analysis include the advantageous and disadvantageous aspects, characterization of the internal aspects and classifying them into strengths and weaknesses, identification of the external aspects, and sorting out of opportunities and threats (Leigh, 2009).
Ethical considerations: The study was affirmed by the Ethics Committee of National Nutrition and Food Technology Research Institute (NNFTRI), Shahid Beheshti University of Medical Sciences, Tehran, Iran (IR.SBMU.nnftri.Rec.1399.031). The anonymity of all respondents was guaranteed and all of them provided informed consent.
Results
Phase I
A total of 192 people participated in this study; they were working in green groceries (33.9%), fresh vegetable markets (17.8%), vegetable shops (26%), and vegetable factories (22.3%). The majority of the participants were men (80.7%) in the age range of 25- 35 years (32.8%) with the educational level of diploma and below (78.1%). Most of the participants (97%) stated they did not have any symptoms of the disease in the past two weeks and did not perform a COVID-19 test (82.3%). Only two of them had formerly been infected with coronavirus, which had been treated before entering the study (Table 1).
The results of self-reported practice questions showed that only about 21% of the participants reported always washing their hands for 20 seconds at least 4 times a day and 40% of them sometimes, clean and disinfect surfaces frequently during the day. In addition, more than half of the participants (53%) always wear a mask in their workplace, 25% of them keep social distancing (two meters). The responses of the subjects towards practice questions to prevent the spread of COVID-19 are shown in Table 2.
More than half of the respondents had desirable practices score (52%) toward the COVID-19 pandemic, whereas acceptable and weak practice was found in 40% and 52% of them, respectively. Nationality, gender, educational level, and workplace were significantly associated with their practices (P< 0.05, Table 3).  
The regression analysis results revealed that the practice of staff in vegetable shops (OR = 2.34, 95% CI = 1.04–5.24, P=0.04) was better than in greengrocers and production line workers in vegetable factories. Also, the practice of participants whose educational level was BSc and above (OR =15.385, 95% CI =1.615-14.56, P=0.01) was better than in the illiterate participants.
Phase II
SWOT analysis of vegetable supply chain safety during the COVID-19 pandemic: The fresh vegetable supply chain in Iran includes suppliers of inputs, wholesalers, retailers, processors, and consumers, who are directly or indirectly related to each other. Internal strengths and weaknesses, as well as external opportunities and threats in vegetable supply and retail centers in Iran, based on the stakeholders' opinions, are summarized in Table 5.
Internal factors
  • Strengths: The major strengths included available vegetable sales centers for diverse and fresh vegetables, creating direct and indirect employment, and the existence of skilled human resources.
  • Weaknesses: The significant weaknesses included poor shelf-life of vegetables, poor technology in planting, harvesting, and distributing vegetables, and non-observance of technical points (temperature, and humidity) in vegetable storage.
External factors
  • Opportunities: The key opportunities included facilitating and promoting agricultural activities and increasing the strength of industry at national and regional levels.
  • Threats: The significant threats included lack of water, the residue of pesticides, and herbicides and reduced consumption of vegetables for fear of being infected with COVID-19.

Figure 1. Participants’ responses to the practice questions toward COVID-19.

Table 1. Characteristics of the participants in the processing and retail centers of vegetables.
Variables N (%)
Gender
   Female 37(19.3)
   Male 155(80.7)
Age (years)
   18-25 50(26)
   25-35 63(32.8)
   35-45 53(27.6)
   ≥ 45 26(13.5)
Educational level
   Illiterate/primary 13(6.8)
   High school/diploma 150(78.1)
   BSc and MSc 29(15.1)
Workplace
   Greengrocers 65(33.9)
   Fresh vegetable markets 34(17.8)
   Vegetable shops 50(26)
   Production line worker in vegetable factories 43(22.3)
Nationality
   Iranian 178(92.7)
   Afghan 14(7.3)
Having symptoms of COVID-19 (in the last two weeks)
   Yes 6(3)
   No 186(97)
Having COVID-19 tested
   No 158(82.3)
   Yes, negative 32(16.7)
   Yes, positive 2(1)
Total 192(100)

Table 2. Participants’ responses to the practice questions toward COVID-19 (n= 192).
Questions Always Often Sometimes Rarely Never
Do you wash your hands with soap and water at least four times a day and for 20 seconds? 41(21.4)a 75(39.1) 34(17.7) 28(14.6) 14(7.3)
If you do not have access to water, do you disinfect your hands with alcohol? 89(46.4) 71(37.0) 17(8.9) 11(5.7) 4(2.1)
Do you clean and disinfect surfaces frequently during the day? 29(15.1) 45(23.4) 77(40.1) 31(16.1) 10(5.2)
Do you avoid touching your eyes, nose, and mouth with unwashed hands? 51(26.6) 76(39.6) 43(22.4) 15(7.8) 7(3.6)
Do you cover your mouth and nose with a mask in your workplace? 101(52.6) 36(18.8) 17(8.9) 15(7.8) 23(12)
Do you change your mask during the day? 56(29.2) 57(29.7) 35(18.2) 27(14.1) 17(8.9)
Do you cover your mouth and nose inside of your elbow when you cough or sneeze? 89(46.4) 59(30.7) 27(14.1) 14(7.3) 3(1.6)
Do you stay at least 2 meters away from other people for social distancing? 49(25.5) 47(24.5) 44(22.9) 34(17.7) 18(9.4)
a: N (%)
Table 3. Relationship between the participants’ demographic characteristics and their practice scores towards COVID-19 (n=192).
Variables Practice score
Weak (8-20) Acceptable (20-30) Desirable (30-40) P-valueb
Nationality
   Iranian 14(7.9) a 68(38.2) 96(53.9) <0.05
   Afghan 3(21.4) 8(57.1) 3(21.4)
Gender
   Female 1(2.7) 9(24.3) 27(73) <0.05
   Male 16(10.3) 67(43.2) 72(46.5)
Educational level
   Illiterate/primary 4(30.8) 7(53.8) 2(15.4) <0.05
   High school/diploma 13(8.7) 59(39.3) 78(52)
   BSc and MSc 0.0 10(34.5) 19(65.5)
Workplace
   Greengrocers 12(18.5) 29(44.6) 24(36.9) <0.05
   Fresh vegetable markets 2(5.9) 17(50.0) 15(44.1)
   Vegetable shops 2(4.0) 18(36.0) 30(60.0)
   Production line worker in vegetable factories 1(2.3) 12(27.9) 30(69.8)
Total 17(8.9) 76(39.6) 99(51.6)
a: N (%); b: Chi-square test.

Table 4. Regression model of the participants’ demographic characteristics and their behavior about COVID-19 in the processing and retail centers of vegetables (n=192).
Variables OR (95% CI) P value
Workplace
   Greengrocers (ref) 0.104a
   Fresh vegetable markets 1.150 (0.466-2.835) 0.762
   Vegetable shops 2.341 (1.045-5.244) 0.039
   Production line worker in vegetable factories 3.309 (0.889-12.314) 0.074
Gender
   Female (ref) 0.544a
   Male 0.687 (0.204-2.315)
Nationality
   Iranian (ref) 0.272
   Afghan 0.445 (0.105-1.888)
Age (years)
   18-25 (ref) 0.760a
   25-35 1.220 (0.464-3.207) 0.687
   35-45 1.719 (0.603-4.905) 0.311
   ≥ 45 1.396 (0.419-4.652) 0.587
Educational level
   Illiterate/primary (ref) 0.057a
   High school/diploma 3.295 (0.648-16.751) 0.151
   BSc and MSc 15.385 (1.615-14.566) 0.017
Practice scores were divided into two levels. The scores of >30 were considered as a desirable practice and a score of <30 demonstrated a weak practice. The score range was 8-40.
 a : P trend

Table 5. SWOT analysis of vegetable safety in the supply chain during the COVID-19 pandemic.
Internal factors
Strengths
  • Available vegetable sales centers for diverse and fresh products
  • Creating direct and indirect employment
  • Existence of skilled human resources
  • Large domestic consumer markets
  • Export of vegetables to other countries
Weaknesses
  • Weak technology in planting, harvesting, and distributing vegetables
  • Poor managerial skills of farmers and producers
  • Lack of management skills and leadership
  • Non-compliance with technical points (temperature, humidity, ...) in the vegetable storage
  •  Short and poor shelf- life of vegetables
  • Limited technical knowledge
  • Poor innovation in supply chain
  • Poor storage of refrigerated warehouses
  • Poor implementation of  HACCP standards
  • Inadequate packaging and labeling
  •  Limitations and high costs of raw materials and packaging machinery
External factors
Opportunities
  • Creating new job opportunities in rural areas
  • Development of vegetable exportation
  • New takeover or partnership opportunities
  •  Moderately cheap cost
  • Facilitating and promoting agricultural activities and increasing the strength of the national and regional industries
Threats
  • Lack of water
  • The residue of pesticides and herbicides
  • Reduced consumption of vegetables due to fear of getting COVID-19
  • Economic cycle downturn during COVID-19
  • Decrease  of export borders closure due to COVID-19 pandemic
  • High losses in vegetables
  • Volatile prices
  • Expensive processing machines
  • Sanctions
Table 6. Strategies of vegetable safety in the supply chain.
Invasive strategies (SO) Conservative strategies (WO)
  • Implementation of traceability in supply chain
  • Increasing political attention to this issue
  • Increasing public awareness  by campaign
  • Using modern technology and new regulation
  • A thorough inspection from farm to consumer
  • Development of vegetable exportation
Competitive strategies (ST)
  • Implementation specific licensing system in place for management skills and leadership
  • More interaction with the governmental sectors
  • Using modern technology and equipment
Defensive strategies (WT)
  • Implementation methods to decrease the residue of pesticides and herbicides
Discussion
The food system is among the main sectors affected by epidemics in the community. Since the outbreak of COVID-19, quarantine and social distance measures to prevent the transmission of the COVID-19 virus have not so impressed the vegetable supply chain. However, it was observed that vegetable distributors and manufacturers have suffered the most from declining sales due to lock-down and price volatility during the epidemic.
The results of the present study on the practice of staff in vegetable retail centers towards the COVD-19 disease showed that half of the respondents had desirable practices, and most of them did not have a COVID-19 virus test. Given that limited screening had been done because of the insufficient income of the participants, some tests and screening have to be done routinely.
It is noteworthy that about 80% of people with COVID-19 infection possess only mild symptoms. These patients can act as "carriers” or as a “reservoir” for reinfection. For this reason, the respondents were requested for their information on the symptoms of COVID-19, and the majority of them stated that they were aware of their symptoms (Ather et al., 2020).
There is an obvious concern for the food industry staff. They should be tested for COVID-19 to eliminate the potential risk of cross-contamination of food with the virus. In food handling and processing sections where food is just marginally prepared, contaminated workers may adulterate food items. Furthermore, person-to-person transmission in sections where staffs are in close contact with each other is another risk (European Commission EC, 2020). Hence, the present study focused on staff who were in direct contact with vegetables.
Most of the participants had high school levels of education and diplomas, and many admitted that they did not understand the importance of the COVID-19 outbreak and its transmission. Therefore, there seems to be a significant relationship between compliance with health protocols like social distance and educational level.
They stated that they washed their hands frequently and had restricted personal contact. Due to the mandatory mask-wearing in Iran, the respondents mostly used masks. Shi et al. reported that almost all subjects in their research wore face masks when going out/in public during the pandemic (Shi et al., 2020).
Handling of food packages must be done after extensive hand washing or disinfecting to minimize any hazard from touching the food exposed to the COVID-19 virus (Giacomelli et al., 2020). In addition, the FDA has proposed that disinfecting and cleaning surfaces is a favored safeguard for restaurants rather than environmental testing for COVID-19. Another essential precaution to prevent the spread of the disease is the use of alcohol hand sanitizer. The disinfectant information question data in the present research indicated that 41.7% of the respondents were using hand sanitizer solutions containing varying percentages of alcohol.  However, because of the rapid spread of the disease in Iran and the high prevalence of the disease, surface disinfection has been frequently used (>60%) and the use of appropriate hand sanitizer (>30%) have not provided an appropriate level of safety.
During the production, transportation, and sale of fresh vegetables, necessary precautions of washing and disinfection should be taken. Vegetables should be minimally manipulated as much as possible. Routine COVID-19 screening of workers is also very important though this requires government support. In a situation where sales have dropped due to the COVID-19 pandemic, the government can provide hand and surfaces sanitizers to vegetable centers.
Reduction in the exports of fresh vegetables due to the border closing is another challenge. Some nations have enforced travel limitations, shut borders, and closed factories, leading to distributions in the worldwide exchange and supply chains (De Paulo Farias and de Araújo, 2020). The export market in Iran, in addition to the COVID-19 issue, has been equally affected by imposed sanctions. In the face of demand slumps due to restaurant closures, as well as slowdowns in the exports because of border measures by some countries, many food processing companies will inevitably switch supply efforts from food service to retail channels. Therefore, vegetable exchange and utilization will decrease. There is less exchanging action in the vegetable discount market since the beginning of the COVID-19 epidemic (Chowdhry et al., 2020, Richards and Rickard, 2020, Samadi et al., 2021).
Assessment of vegetable chains in Ethiopia indicated an increase in farm losses, along with a lack of inputs and work, marked down maker costs for vegetables. However, retail costs have remained unaltered so far; and both vegetable exchange and utilization have decreased (Tamru et al., 2020). An investigation on retail costs in India revealed that these costs have expanded and afterward balanced out in India on a national level, yet have been fluctuated by the specific kind of vegetable (Pingali and Mittra, 2020). Similarly, another study in India reported issues with discovering harvest work, transport to market, marked down interest by purchasers and retailers, and expanded retail costs for vegetables in various states (Pothan et al., 2020).
The COVID-19 pandemic has affected vegetable processors. In this business, development in the retail market for processed foods, decrease in foodservice interest for processed foods, and reduced export and import activities have occurred. The overall impact of the disease on the economic activities of fresh vegetables and the related gross domestic products depends on the magnitude and persistence of the consequences of COVID-19. Hence, initiators and investors are committed to disruptions. Since people are terrified of the outbreak and the governments have taken the initiative to lock in, people attempt to stockpile daily necessities, resulting in the soaring prices of the basic ware.
For vegetable supply and retail centers, the impacts of the COVID-19 pandemic are not equal for all types of vegetables; rather they vary according to the assortment of components, including international exchange, seasonality, simplicity of preparation, and fresh and processed products. There have been many cases where vegetable gardeners have unknowingly used manure and composts that are usually contaminated with herbicides. In Iran, fluctuations in the production, processing, and supply of vegetables over the recent years have caused various problems, including the dissatisfaction of both producers and consumers.
Official statistical reports, however, show that more than 35% of this product goes to waste on an annual basis. High losses in agricultural products are due to improper harvesting and transportation methods, unsuitable storage of products after harvest, poor sorting, and improper packaging and distribution. Losses also occur during retail sales, consumption, and processing. Upgrading of systems, designed to minimize losses, could provide the country with an opportunity to preserve its resources and increase its vegetable exports. In general, inappropriate post-harvest handling can cause: 1) product losses, 2) high costs and low profit, 3) losses of market opportunity, and 4) low competitiveness (Baghkhandan, 2006).
It seems that the major factors that contribute to supply chain waste include:
1.   Use of improper technology for harvesting, processing, and storage.
2.   Lack of product cooling after harvest and shortage of cold warehouse.
3.   Inappropriate transportation.
4.   Lack of product grading.
5.   Lack of washing/cleaning systems.
6.  Lack of awareness of suitable methods of preservation.
7.  Lack of suitably-integrated vegetable chains for transportation storage, sorting, grading, packaging, and marketing.
8. Lack of producer awareness of markets and fresh product prices.
Based on the results of SWOT analysis (Table 6), the following strategies and practical solutions for the development of vegetable safety in the supply chain as COVID-19 pandemic priorities are presented:
  1. Developing new technologies and methods of producing ready-to-eat vegetables
  2. Organizing and coordinating diverse parts of the supply chain.
  3. Improving the technical and marketing skills of the distributors and processors of the vegetable supply chain.
  4. Production stability and control of domestic market prices
  5. Increasing the quality of vegetables (production of organic and healthy vegetables without the use of chemical fertilizers) at minimum prices and unlimited access for consumers.
  6. Meeting industrial needs by directing investment to produce suitably-prepared and processed vegetables.
  7. Variety in processed products and expansion of the share of processed products in the consumption pattern of households.
  8. Paying due attention to the packaging and classification of export products
  9. Expanding the export markets by improving quality and complying with the national and international standards like GAP [Good Agricultural Practice] and HACCP [Hazard Analysis and Critical Control Point].
  10. Development of logistics and complementary activities like storage, refrigeration, transportation facilities, especially railways, research and development, and grading and packaging industries of vegetable products.
Policymakers can make use of the above-recommended strategies and solutions for setting laws and regulations to increase public health. This is the first study that uses SWOT analysis during the COVID-19 pandemic to help policymakers to make appropriate strategies and find practical solutions for improving vegetable safety in the supply chain. The only limitation of the present study was the COVID-19 pandemic which makes conducting the field study very hard.
Conclusion
The results of the present study showed that near half of the respondents had desirable practices towards COVD-19. The SWOT analysis results revealed that significant weaknesses included poor shelf-life of vegetables, poor technology in planting, harvesting, and distributing vegetables, and non-observance of technical points in the vegetable storage. In addition, lack of water, the residue of pesticides, and herbicides, and reduced consumption of vegetables due to the fear of being infected with COVID-19 were recognized as threats. It seems necessary to develop strategies to improve the current situation in the vegetable industry. Price stability, ensuring the availability of fresh and healthy vegetables and the use of modern technology to vegetables market through social media are at the top of the strategies that policymakers can make use of to increase vegetable consumption and promote public health. They can utilize the practical solutions for taking action in the potential strengthening of vegetable safety in the supply chain to improve public health during the COVID-19 pandemic.
Acknowledgment
 The authors would like to acknowledge the Research Council of National Nutrition and Food Technology Research Institute (NNFTRI), Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences for financial support (Grants No.99-23210). We appreciate the cooperation and support of all respondents for the time and effort they devoted to the study. All stakeholders are appreciated for their valuable help in conducting this study. Also, thanks are owed to Mr. Ebrahim Pravin for his kind assistance.
Authors’ contributions
The study's design, supervision, data collection, experimental measuring, statistical analysis, and manuscript drafting were all carried out by Eskandari  S, Rashidimehr A, and Esfarjani F. Salmani Y helped with the study design, data collection, and manuscript drafting, while Mohammadi-Nasrabadi F helped with the conceptualization, methodology, and data interpretation.
Conflicts of interest
The authors have no conflict of interest that might be perceived as affecting the objectivity of this publication.
Funding
This project was funded by National Nutrition and Food Technology Research Institute (NNFTRI), Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran (Grant No. 23210).
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European Commission EC 2020. Directorate-general for health and food safety. COVID-19 and Food Safety.
Food and Agriculture Organization 2020. Global production of vegetables in 2017. Rome, Italy.
Galanakis CM 2020. The food systems in the era of the coronavirus (covid-19) pandemic crisis. Foods. 9 (4): 523.
Giacomelli A, Laura Pezzati L & Conti F 2020. Self-reported olfactory and taste disorders in SARS-CoV-2 patients: A cross-sectional study. Clinical infectious diseases. 71 (15): 889-890.
Hailu G 2020. Economic thoughts on COVID‐19 for Canadian food processors. Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie. 68) (2): 163-169.
Hess T & Sutcliffe C 2018. The exposure of a fresh fruit and vegetable supply chain to global water-related risks. Water international. 43) (6): 746-761.
Khayyatzadeh S 2020. Nutrition and Infection with COVID-19. Journal of nutrition and food security. 5 (2): 93-96.
Leigh D 2009. Swot analysis. Handbook of Improving Performance in the Workplace. Volumes. 1‐3: 115-140.
Malik YS, et al. 2020. Emerging coronavirus disease (COVID-19), a pandemic public health emergency with animal linkages: current status update.
Moura J & Souza R 2020. Impacts of SARS-COV-2 on Brazilian agribusiness. Historia Ambiental Latinoamericana y Caribeña (HALAC) revista de la Solcha. 10 (2).
Pakravan-Charvadeh MR, et al. 2021. The short-term effects of COVID-19 outbreak on dietary diversity and food security status of Iranian households (A case study in Tehran province). Journal of cleaner production. 281: 124537.
Pingali P & Mittra B 2020. How did covid-19 impact India's food prices? Tata-Cornell Institute for Agriculture and Nutrition Blog.
Pothan PE, Taguchi M & Santini G 2020. Local food systems and covid-19: A glimpse on India's

responses. In Rome: FAO.

Ramees TP, et al. 2017. Arcobacter: An emerging food-borne zoonotic pathogen, its public health concerns and advances in diagnosis and control–a comprehensive review. Veterinary quarterly. 37 (1): 136-161.
Richards TJ & Rickard B 2020. COVID‐19 impact on fruit and vegetable markets. Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie. 68 (2): 189-194.
Rodriguez-Morales AJ, et al. 2020. History is repeating itself: Probable zoonotic spillover as the cause of the 2019 novel Coronavirus Epidemic. Infez Med. 28 (1): 3-5.
Samadi AH, Owjimehr S & Halafi ZN 2021. The cross-impact between financial markets, Covid-19 pandemic, and economic sanctions: The case of Iran. Journal of policy modeling. 43 (1): 34-55.
Septembre-Malaterre A, Remize F & Poucheret P 2018. Fruits and vegetables, as a source of nutritional compounds and phytochemicals: Changes in bioactive compounds during lactic fermentation. Food research international. 104: 86-99.
Shi Y, et al. 2020. Knowledge and attitudes of medical staff in Chinese psychiatric hospitals regarding COVID-19. Brain, behavior, & immunity-health. 4: 100064.
Tamru S, Hirvonen K & Minten B 2020. 18. Impacts of the COVID-19 crisis on vegetable value chains in Ethiopia, https://ebrary.ifpri.org/ digital/collection/p15738coll2/id/133839. pp. 81-83.
World Health Organization 2020. World health organization, covid-19 and food safety: Guidance for food businesses. Interim guidance, 7 April 2020.
Yahia EM, García-Solís P & Celis MEM 2019. Contribution of fruits and vegetables to human nutrition and health. Postharvest physiology and biochemistry of fruits and vegetables.


 
Type of article: orginal article | Subject: public specific
Received: 2021/10/27 | Published: 2023/05/20 | ePublished: 2023/05/20

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7. De Paulo Farias D & de Araújo FF 2020. Will COVID-19 affect food supply in distribution centers of Brazilian regions affected by the pandemic? Trends in food science & technology. 103: 361-366.
8. European Commission EC 2020. Directorate-general for health and food safety. COVID-19 and Food Safety.
9. Food and Agriculture Organization 2020. Global production of vegetables in 2017. Rome, Italy.
10. Galanakis CM 2020. The food systems in the era of the coronavirus (covid-19) pandemic crisis. Foods. 9 (4): 523.
11. Giacomelli A, Laura Pezzati L & Conti F 2020. Self-reported olfactory and taste disorders in SARS-CoV-2 patients: A cross-sectional study. Clinical infectious diseases. 71 (15): 889-890.
12. Hailu G 2020. Economic thoughts on COVID‐19 for Canadian food processors. Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie. 68) (2): 163-169.
13. Hess T & Sutcliffe C 2018. The exposure of a fresh fruit and vegetable supply chain to global water-related risks. Water international. 43) (6): 746-761.
14. Khayyatzadeh S 2020. Nutrition and Infection with COVID-19. Journal of nutrition and food security. 5 (2): 93-96.
15. Leigh D 2009. Swot analysis. Handbook of Improving Performance in the Workplace. Volumes. 1‐3: 115-140.
16. Malik YS, et al. 2020. Emerging coronavirus disease (COVID-19), a pandemic public health emergency with animal linkages: current status update.
17. Moura J & Souza R 2020. Impacts of SARS-COV-2 on Brazilian agribusiness. Historia Ambiental Latinoamericana y Caribeña (HALAC) revista de la Solcha. 10 (2).
18. Pakravan-Charvadeh MR, et al. 2021. The short-term effects of COVID-19 outbreak on dietary diversity and food security status of Iranian households (A case study in Tehran province). Journal of cleaner production. 281: 124537.
19. Pingali P & Mittra B 2020. How did covid-19 impact India's food prices? Tata-Cornell Institute for Agriculture and Nutrition Blog.
20. Pothan PE, Taguchi M & Santini G 2020. Local food systems and covid-19: A glimpse on India's responses. In Rome: FAO.
21. Ramees TP, et al. 2017. Arcobacter: An emerging food-borne zoonotic pathogen, its public health concerns and advances in diagnosis and control–a comprehensive review. Veterinary quarterly. 37 (1): 136-161.
22. Richards TJ & Rickard B 2020. COVID‐19 impact on fruit and vegetable markets. Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie. 68 (2): 189-194.
23. Rodriguez-Morales AJ, et al. 2020. History is repeating itself: Probable zoonotic spillover as the cause of the 2019 novel Coronavirus Epidemic. Infez Med. 28 (1): 3-5.
24. Samadi AH, Owjimehr S & Halafi ZN 2021. The cross-impact between financial markets, Covid-19 pandemic, and economic sanctions: The case of Iran. Journal of policy modeling. 43 (1): 34-55.
25. Septembre-Malaterre A, Remize F & Poucheret P 2018. Fruits and vegetables, as a source of nutritional compounds and phytochemicals: Changes in bioactive compounds during lactic fermentation. Food research international. 104: 86-99.
26. Shi Y, et al. 2020. Knowledge and attitudes of medical staff in Chinese psychiatric hospitals regarding COVID-19. Brain, behavior, & immunity-health. 4: 100064.
27. Tamru S, Hirvonen K & Minten B 2020. 18. Impacts of the COVID-19 crisis on vegetable value chains in Ethiopia, https://ebrary.ifpri.org/ digital/collection/p15738coll2/id/133839. pp. 81-83.
28. World Health Organization 2020. World health organization, covid-19 and food safety: Guidance for food businesses. Interim guidance, 7 April 2020.
29. Yahia EM, García-Solís P & Celis MEM 2019. Contribution of fruits and vegetables to human nutrition and health. Postharvest physiology and biochemistry of fruits and vegetables.

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