"The study, conducted in Los Angeles between August and October, paired positive test results with the answers to a questionnaire that asked about occupation. Construction workers had a positivity rate of 5.7% for individuals who were asymptomatic, and 10.1% for those with symptoms, according to the study, which was administered by testing firm Curative and has not been certified by peer review.
The study encompasses one of the largest datasets yet of positive test results among construction workers and comes at a time when an advisory committee to the Centers for Disease Control and Prevention weighs whether essential workers, including those in construction, should be second in line to receive the first available doses of approved vaccines in the United States.
The positivity rates among construction workers in the study were strikingly high when compared to other industries. For example, while construction had a 5.7% positivity rate for individuals who were asymptomatic, the next highest industry, food services, had just a 3.8% rate, or a third lower. For symptomatic cases, only correction workers had a higher positivity rate, at 12.5%, compared to construction’s 10.1%."