SARS-CoV-2 Seroprevalence Survey in Grocery Store Workers-Minnesota, 2020-2021

Grocery workers were essential to the workforce and exempt from lockdown requirements as per Minnesota Executive Order 20-20. The risk of COVID-19 transmission in grocery settings is not well documented. This study aimed to determine which factors influenced seropositivity among grocery workers. We...

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Bibliographic Details
Published in:International journal of environmental research and public health 2022-03, Vol.19 (6), p.3501
Main Authors: Vachon, Madhura S, Demmer, Ryan T, Yendell, Stephanie, Draeger, Kathryn J, Beebe, Timothy J, Hedberg, Craig W
Format: Article
Language:English
Subjects:
Adolescent
Age groups
Aged
Asymptomatic
Communicable Disease Control
Coronaviruses
COVID-19
COVID-19 - epidemiology
COVID-19 diagnostic tests
Cross-Sectional Studies
Customer services
Disease transmission
Employees
Glycoproteins
Grocery stores
Households
Humans
IgG antibody
Immunoglobulin G
Laboratories
Minnesota - epidemiology
Pandemics
Polls & surveys
Responsibilities
SARS-CoV-2
Seroepidemiologic Studies
Serology
Severe acute respiratory syndrome coronavirus 2
Supermarkets
Workers
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Summary:Grocery workers were essential to the workforce and exempt from lockdown requirements as per Minnesota Executive Order 20-20. The risk of COVID-19 transmission in grocery settings is not well documented. This study aimed to determine which factors influenced seropositivity among grocery workers. We conducted a cross-sectional study of Minnesota grocery workers aged 18 and older using a convenience sample. Participants were recruited using a flyer disseminated electronically via e-mail, social media, and newspaper advertising. Participants were directed to an electronic survey and were asked to self-collect capillary blood for IgG antibody testing. Data were analyzed using logistic regression and adjusted for urbanicity, which confounded the relationship between number of job responsibilities in a store and seropositivity. Of 861 Minnesota grocery workers surveyed, 706 (82%) were tested as part of this study, of which 56 (7.9%) tested positive for IgG antibodies. Participants aged 65-74 years had the highest percent positivity. Having multiple job responsibilities in a store was significantly associated with seropositivity in our adjusted model (OR: 1.14 95% CI: 1.01-1.27). Workplace factors influenced seropositivity among Minnesota grocery workers. Future research will examine other potential factors (e.g., in-store preventive measures and access to PPE) that may contribute to increased seropositivity.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph19063501