Covid-19: Fever, chills, and aches more common when AstraZeneca and Pfizer vaccines are mixed, early data show

Mixing doses of the Oxford AstraZeneca and Pfizer BioNTech covid-19 vaccine leads to more frequent mild moderate reactions compared with standard dosing schedules, researchers have reported. Researchers running University led Com-COV study—which is investigating reactogenicity immunogenicity from mixing two vaccines—reported their preliminary results in a peer reviewed research letter Lancet .1 Matthew Snape, associate professor paediatrics vaccinology at chief investigator on trial, said, “While this secondary part what we are trying explore through these studies, it important that inform people about data, especially as mixed schedules being considered several countries. “The study …