‘Mix and match’ COVID-19 vaccine strategy appears safe
The Health Institute Carlos III in Spain presented preliminary results of their ‘mix and match’ trial using the Oxford Astra Zeneca and Pfizer-BioNTech COVID-19 vaccines.
The Health Institute Carlos III in Spain presented preliminary results of their ‘mix and match’ trial using the Oxford Astra Zeneca and Pfizer-BioNTech COVID-19 vaccines.