Scientists study vaccines' effectiveness against new Covid strains

NIH scientists are studying whether Covid-19 vaccines will provide the same level of protection against new strains of the virus as they do against earlier strains.

https://ift.tt/eA8V8J from Hindustan Times - topnews https://ift.tt/2LcuzUS
NIH scientists are studying whether Covid-19 vaccines will provide the same level of protection against new strains of the virus as they do against earlier strains.