Covid19-Sources

Fig. 5: Preterm birth and perinatal mortality after SARS-CoV-2 in pregnancy.a,b, Preterm birth (<37 weeks gestation) rate per 100 live births (a) and extended perinatal mortality rates (b) (stillbirths (death in utero ≥24 weeks gestation) and neonatal deaths within 28 d of birth per 1,000 total births) in different cohorts during the pandemic. Background rate is the rate for all babies born during the pandemic period (1 March 2020 to 31 October 2021); no confirmed SARS-CoV-2 is the rate for babies born during the pandemic period (1 March 2020 to 31 October 2021) to women with no confirmed SARS-CoV-2 infection during pregnancy; any SARS-CoV-2 is the rate for babies born to women who had confirmed SARS-CoV-2 during their pregnancy 1 December 2020 to 31 October 2021; SARS-CoV-2 within 28 d of birth is the rate for babies born to women who had confirmed SARS-CoV-2 during their pregnancy 1 December 2020 to 31 October 2021, restricted to babies born within 28 d of the date of onset of maternal infection; Any COVID-19 vaccination is the rate for babies born to women who had COVID-19 vaccination during their pregnancy 1 December 2020 to 31 October 2021; COVID-19 vaccination within 28 d of birth is the rate for babies born to women who had COVID-19 vaccination during their pregnancy 1 December 2020 to 31 October 2021, restricted to babies born within 28 d of the date of maternal vaccination.