Pregnant women tested for coronavirus offer another picture of the infection rate

A new study showed that some women who delivered babies in the city in recent weeks had been inflicted with the coronavirus without displaying symptoms.

NewYork-Presbyterian and Columbia University Medical Center screened more than 200 women for the illness upon admission between March 22 and April 4, according to the study.

Among the 33 patients who tested positive, 29 of them had no symptoms.

The study, doctors claim, underscores the risk of COVID-19 among asymptomatic obstetrical patients. It also warns the true prevalence of infection may be underreported because of false-negative results of tests to detect SARS-CoV-2.

One of the doctors who performed the study was on TV, this morning. She made the point that this was one of the first instances we have of a demographic group not expected to show the greatest rate of infection — yet, with 100% testing of 215 women, it indicated an infection rate of more than 15%.