Pfizer, Moderna and AstraZeneca vaccines: Whats the difference?

As several countries around the world roll out their inoculation programmes, questions about the different brands of vaccines have surfaced. Here is all you need to know about the Pfizer, Moderna and AstraZeneca vaccines. A year ago, the world embarked on an endeavour to develop safe and effective vaccines for Covid-19. Today, and in record … Continue reading Pfizer, Moderna and AstraZeneca vaccines: Whats the difference?