Universal SARS-CoV-2 testing of pregnant women admitted for delivery in two Italian regions

Study of 533 pregnant women in two neighboring Italian regions, considered at medium risk of infection, to estimate the “true” SARS-CoV-2 infection rate among women admitted for delivery and the burden of undocumented infections in this population. The estimated risk of undocumented infection in pregnant women, obtained in this population at a “steady-state” for virus circulation and during a country lockdown, confirms earlier estimates of about 4-9 undetected cases to 1 case detected because of symptoms. Thus, a strategy of universal testing of all pregnant women admitted for delivery is needed to control further spread of the virus

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