High prevalence of SARS-CoV-2 antibodies in pregnant women after the second wave of infections in the inner-city of Johannesburg, Gauteng Province, South Africa.

"Declaration of competing interest CC has received grant support from Sanofi Pasteur and Advanced Vaccine Initiative and payment of travel costs from Parexel. NW and AvG have received grant support from Sanofi Pasteur and the Bill and Melinda Gates Foundation."

"Funding This study received funding from the South African Medical Research Council and the Wellcome Trust and the United Kingdom Foreign, Commonwealth and Development Office (Grant no 221003/Z/20/Z). This research was supported through the supply of Wantai ELISA kits by the World Health Organization Unity Studies, a global seroepidemiological standardization initiative, with funding to the World Health Organization by the COVID-19 Solidarity Response Fund and the German Federal Ministry of Health COVID-19 Research and development Fund. None of the funders had any role in the collection, analysis, and interpretation of data; in the writing of the report; and in the decision to submit the article for publication."