Jun 27, 2022 02:00 PM (GMT+8) · EqualOcean
After the release of the report that AstraZeneca vaccine can cause side effects to some vaccinators, the UK and most parts of Europe decided to use Pfizer vaccine as the second vaccine for certain age groups, thus creating a natural hybrid vaccination experiment. The latest data from the UK show that this special mix and match method has formed additional immunity to the Omicron variant virus compared with people who have been vaccinated with other vaccines.