Study confirms high efficacy of Pfizer and Moderna vaccine

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The U.S. has been vaccinating people with Moderna and Pfizer/Biontech’s mRNA vaccines since December. Now, the U.S. Centers for Disease Control (CDC) has been able to confirm the high effectiveness of the vaccines. They reduce the risk of infection among healthcare workers and first responders by 90 percent 2 weeks after the second vaccination.

The vaccines are thus highly effective, according to the CDC study. This confirms the results of a large-scale clinical trial prior to emergency approval by the U.S. Food and Drug Administration.

Hopes of breaking the chain of infection
The study also included infections without symptoms, which accounted for a “small proportion” of about ten percent of all positive tests. There is thus hope that vaccinated persons can no longer infect others in most cases and that chains of infection can thus be interrupted.

The CDC had scrutinized mRNA vaccines from Pfizer/Biontech and Moderna: Nearly 4,000 people in the medical field were tested weekly in 6 U.S. states between December and March. The results confirmed previous studies, which also indicate that asymptomatic transmission of coronavirus is unlikely in vaccinated individuals.

Number of infections down 80 percent
The CDC also observed a high level of protection even after only one of the two mandatory doses. After one dose, the number of infections had already decreased by 80 percent. The results are logical in view of the manufacturers’ own large studies. However, these had examined how effective the substances were against the outbreak of the Covid-19 disease, not the rate of infection with the virus.

  • source: futurezone.at/picture:
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