But experts argue that by using two different vaccines, there is not going to be a greater magnitude of protection against the disease. As I understand from my undergraduate studies in Microbiology, the AstraZeneca and Pfizer-BioNTech vaccines use two different technologies. The Pfizer-BioNTech vaccine is an mRNA vaccine whereas AstraZeneca’s uses the adenovirus vector technology, which is similar to the Johnson & Johnson vaccine. Both vaccines currently require two doses. As for mixing and matching vaccines, there’s simply too little known about it currently, hence I personally am not up for it.

Source: The Star April 16, 2021 22:24 UTC