Covid: Vaccine efficacy diminished as Delta arose, US report shows

The effectiveness of Covid-19 vaccines among front-line workers declined to 66% after the delta variant became dominant, compared with 91% before it arose, according to a report from the US Centers for Disease Control and Prevention.

By August 25, 2021 at 10:16AM

Read More https://timesofindia.indiatimes.com/world/us/covid-19-vaccine-efficacy-diminished-as-delta-arose-cdc-report-shows/articleshow/85615067.cms