Background document on the Janssen Ad26.COV2.S (‎COVID-19)‎ vaccine

This background document was prepared by the Strategic Advisory Group of Experts (SAGE) on Immunization Working Group on COVID-19 Vaccines to inform the discussions of SAGE at its 15 March 2021 meeting, which resulted in the issuance of the WHO interim recommendations for use of the Ad26.COV2.S (COVID-19) vaccine. Both the recommendations and the background document are available on the SAGE COVID-19 webpage.