BBCNEWS BBC News at Six December 3, 2021 18:13:00
Everybody. for those boosted with pfizer after two doses _ everybody. for those boosted with pfizer after two doses of _ pfizer after two doses of astrazeneca their antibody levels were 25 times hiring than a control group after one month. when pfizer was given after two pfizer shots, antibody levels rose eight fold, but from a much higher initial level. moderna and other combinations also worked well. the study didnt looks at 0micron, it has mutations in the spike protein which may make antibod...
Source: archive.org