AstraZeneca Vaccine: Recommendations and Differences from Pfizer and Moderna

AstraZeneca Requires Two Doses

Like the Pfizer and Moderna vaccines, the AstraZeneca vaccine requires two doses. Experts caution that it takes a couple of weeks for the body to develop some level of immunity after vaccination.

Different Vaccine Mechanism

While Moderna and Pfizer vaccines are based on mRNA technology, the AstraZeneca vaccine is a viral vector vaccine. This means it uses a different mechanism to deliver the vaccine to the body.

Updated Recommendations

The AstraZeneca vaccine recommendations have been modified to indicate that it can be followed by a booster dose of either the Pfizer-BioNTech or the Moderna vaccine. This regimen provides an enhanced immune response.

Booster Dose Efficacy

A regimen of two doses of the AstraZeneca vaccine followed by a booster dose of the Pfizer-BioNTech or the Moderna vaccine has shown initial promise in improving vaccine efficacy.