A Delta variant of coronavirus is responsible for at least 80% of new cases of covid-19 US USA, said on Tuesday, 20, the epidemiologist Anthony Fauci. However, at a Senate hearing, the effectiveness of the vaccines used in the country for the strain was highlighted, in what Fauci called “extraordinary”.
The expert also pointed out that in the new real world, vaccines have been showing greater efficacy than that presented in clinical trials, according to some data. Citing the case of Israel, Fauci said that immunization agents have been working for all age groups.
However, in addition to the “good news”, the epidemiologist highlighted the challenges of reality, and said about the delta variant that its reason “for being so formidable is the fact that it has the ability to efficiently transmit from human to human from an extraordinary way”, containing greater transmissibility than the other strains identified so far. In some regions of the US, Fauci indicated that the delta variant is already responsible for more than 90% of cases.
Regarding the application of new booster doses of the vaccines, the third in the case of Pfizer and Moderna, and the second for Johnson & Johnson, Fauci stated that studies are currently being carried out to find out about the need for the application. “We don’t want people to hear about boosters and think that vaccines aren’t effective, they’re very effective, we’re talking about duration,” he concluded.
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