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Authors' reply re: Intrapartum‐related perinatal deaths in births planned in midwifery‐led settings in Great Britain: findings and recommendations from the ESMiE confidential enquiry

theWuhan team to report these results in order to protectmaternal and fetal health, and control the virus spread. Our manuscript was accepted on 20 April 2020 and published on 26 May 2020, before the second article was published on 8 July 2020. We have confirmed with Lan Dong, who was in charge of the medical records, and found that five parturients overlapped. It is obvious that the two manuscripts have totally different aims. Our article focused on whether vaginal secretions and breast milk of women with COVID19 contained severe acute respiratory syndrome coronavirus 2 (SARS-CoV2), whereas the second article aimed to share clinical characteristics, treatments and perinatal outcomes of pregnant women with COVID-19. Second, the groups of participants were different. Our study included 13 women, five in their first trimester, three in their second trimester and five in their third trimester, whereas the second study recruited 18 women during late pregnancy. The second study was not just a simple duplication of cases but provided different facets of the impact of COVID-19 on pregnant women. As mentioned by Bauchner et al., reporting of the same patients in different articles may affect the accuracy of subsequent estimates of prevalence of the disease or outcomes. However, for those studies aiming to analyse different biosamples, stages of disease development, or facets of a cohort or disease, it is inevitable that duplicate cases will occur, especially when there were very limited cases at the beginning of this pandemic. However, it is clear that all authors should clarify if any patients have been reported in any previous submissions or publications. We apologise for the confusion.