A study today in JAMA Network Open that found quadruple the risk of COVID-19 in California farmworkers reveals risk factors for current or previous SARS-CoV-2 infection in the group, including outdoor work exposures, crowded living conditions, and high body mass index (BMI).A team led by University of California at Berkeley researchers analyzed the data of 1,107 adult farmworkers undergoing testing for COVID-19 infection and immunoglobulin G (IgG) antibodies at federally qualified community clinics and community sites in the Salinas Valley from Jul 16 to Nov 30, 2020.Roughly 50,000 farmworkers live in the valley, part of Monterey County, with another 40,000 workers joining their ranks in the peak summer and fall seasons.Mean worker age was