Vaping nicotine is associated with increased medically-attended COVID-19 in women of reproductive age in an integrated health system

Abstract Background: Vaping in adolescents and young adults is increasingly common and has been shown to cause deleterious effects. Little is known about the effects of vaping on risk of coronavirus disease 2019 (COVID-19) among women of reproductive age. This study evaluated whether vaping nicotine and/or cannabis during the year before pregnancy was associated with medically-attended COVID-19 episodes. Methods: This large multicenter cross-sectional retrospective study evaluated women universally screened for vaping during the year before pregnancy as part of standard