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 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 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
That’s weird .... death rates are the lowest they have ever been. “New Coronavirus” What happened to the current virus?
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