Virus transmission in non-comparative studies of healthcare workers wearing personal protective equipment.

<p>Abbreviations: CI = confidence interval; n = number of events; N = number of HCWs at risk for whom we knew the PPE worn; NR = not reported; WHO = World Health Organization. ^aMost studies did not provide data on all healthcare workers; only workers with available data were included. ^bCase reports: One report on filovirus (Martini 1969) and one on Crimean-Congo hemorrhagic fever (Naderi 2011) were identified. ^cOne case report on Crimean-Congo hemorrhagic fever (Tutuncu 2009) was identified. ^dOne case report on Crimean-Congo hemorrhagic fever (Naderi 2011) was identified. ^ePPE protocol was altered during process of care; unclear whether events occurred before or after the enhanced PPE protocol was implemented.