mRNA vaccines effectiveness against Delta falls to 66 percent. More Covid19 updates: 🇮🇱 Israeli finance minister tests positive for Covid-19 🇬🇷 Greece to end free Covid tests for unvaccinated 🇧🇷 Brazil sees 30,872 new cases, 894 deaths For more:
In this March 2, 2021, file photo, a pharmacy technician loads a syringe with Pfizer's Covid-19 vaccine at the Portland Expo in Portland, Maine, US. 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.
By looking at the rate of infections among vaccinated and unvaccinated people and the amount of time they were tracked, vaccine effectiveness was estimated at 91 percent in the initial study period of December 14, 2020 to April 10, 2021. The CDC tally includes two-dose vaccines from Moderna and Pfizer/BioNTech, as well as Johnson & Johnson's one-shot vaccine.Rangers have received positive Covid-19 tests in their latest round of testing, the Scottish champions said, days before their weekend clash against Celtic.
Health authorities reported 4,608 new confirmed cases and 32 related deaths, with the daily tally of infections hitting a new record, surpassing 4,340 cases in March this year.
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