Health
Messenger RNA Covid vaccines 66% effective against Delta: US study – Yahoo News Australia
The effectiveness against infection of the Pfizer and Moderna Covid-19 vaccines dropped from 91 percent before the Delta variant…
The effectiveness against infection of the Pfizer and Moderna Covid-19 vaccines dropped from 91 percent before the Delta variant became dominant to 66 percent afterwards, according to a large study of US health workers published Tuesday.
The Centers for…
Continue Reading
