From March 22 to April 4, 2020, 215 women delivered infants at New York–Presbyterian and Columbia Medical Center.
— Nicholas A. Christakis (@NAChristakis) April 14, 2020
A total of 15.4% tested positive by PCR for current SARS-CoV-2. That’s an indicator of NYC attack rate now.
Most were asymptomatic. https://t.co/b9k5YeoszA