BioCentury
DATA GRAPHICS | Product Development

Trials mixing and matching COVID-19 vaccines: Data Byte

June 4, 2021 2:14 AM UTC

Interest in mixing different COVID-19 vaccines in prime-boost regimens is on the rise due to supply issues and safety concerns. At least 12 ongoing trials were designed to test combinations of vaccines for prime and boost shots, and at least three others include secondary boosters of different vaccines, according to BioCentury’s Clinical Trial Dashboard.

Most of the trials designed to test heterologous prime-boost regimens (shown below) are pairing vaccines already authorized for emergency use, with only two of the trials including non-authorized vaccines...