Covid 19 Vaccine Stopped, Less Effective Against New Strain

Drugmaker AstraZeneca is racing to adapt its Covid-19 vaccine in the face of new variants of the virus.
The process has become more urgent after the outcome of a small-scale study.
The study found that it was less effective at protecting against the more virulent strain discovered in South Africa.
Vaccine makers are working on second-generation shots to target variants.

A recent news article published in CNBC reveals that AstraZeneca races to adapt Covid vaccine to variant as South Africa...