A research letter published yesterday in JAMA revealed a 3.9% prevalence of COVID-19 among women giving birth at three Yale New Haven hospitals in Connecticut.A separate study published today in Infection Control & Hospital Epidemiology found a 7.9% prevalence of the novel coronavirus among symptomatic obstetric patients and a 1.5% prevalence among asymptomatic patients (those not having COVID-19 symptoms) at four Boston hospitals.Positive test results in 2.9% of asymptomatic patients In the JAMA study, the authors tested 782 pregnant women for COVID-19.
Twelve (1.5%) had been previously tested positive for SARS-CoV-2, the virus that causes COVID-19. Of the remaining 770 patients, 30 (3.9%) tested positive, 22 (73.3%) of whom were