Grocery Workers at Risk for COVID Without Symptoms



By Cara Murez


HealthDay Reporter


FRIDAY, Oct. 30, 2020 (HealthDay News) — Grocery workers are likely at greater risk of infection with the new coronavirus, a new study shows.


Not only that, but because a high percentage of them have no symptoms when they are infected, they could become sources of future spread, the researchers said.


For the study, Harvard University T.H. Chan School of Public Health scientists studied the test results of workers at a single grocery store in Boston. One in five workers (20%) tested positive for SARS-CoV-2, and three-quarters of those with the virus had no symptoms.


These essential workers could be an important reservoir of infection, the investigators said. “Once essential workers are infected with SARS-CoV-2, they may become a significant transmission source for the community they serve,” the researchers explained.


The percentage of those infected was much higher than the virus’s prevalence in the local community, which was 0.9% to 1.3% at that time. The grocery workers who had customer-facing jobs were five times more likely to test positive, the findings showed.


The study was published Oct. 29 in the journal Occupational and Environmental Medicine. The grocery workers had the coronavirus tests in May as part of a mandatory testing policy in Boston.


The workers also answered questions about symptoms and exposures, and completed detailed questionnaires about their lifestyles, medical and employment histories, working patterns, role at the store, commuting to and from work, and the protective measures they were able to take against infection at work. Most also answered questionnaires focusing on anxiety and depression.


The study was small and specific to the one location, the researchers cautioned.


“This is the first study to demonstrate the significant asymptomatic infection rate, exposure risks, and associated psychological distress of grocery retail essential workers during the pandemic,” Justin Yang and colleagues said in a journal news release.


About one in four of the 99 employees who completed the mental health questions reported feeling at least mild anxiety. About half of those respondents weren’t able to consistently practice social distancing at work. Those who were able to practice social distancing tended to be less anxious, according to the report.



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