Two new Israeli studies on the efficacy of Pfizer coronavirus vaccinations suggest that the vaccine significantly reduces virus transmission.
Both studies require further confirmation and peer review, but the results indicate a significant reduction for the transmission of both symptomatic and asymptomatic distribution.
The latest study, published Friday in the British medical journal The Lancet, showed an 85 percent reduction in symptomatic COVID-19 within 15 to 28 days, with an overall reduction in infections – including asymptomatic spread – of 75 percent .
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Michal Linial, professor of molecular biology and bioinformatics at the Hebrew University of Jerusalem, said the findings are a big step forward.
“Whether it’s a 75 or 90 percent reduction does not matter – it’s a big drop in the transfer,” Linial told Reuters. “This means that the individual is not only vaccinated, but that the vaccination also protects his or her environment.”
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Another study by the Israeli Ministry of Health and Pfizer Inc. was done, found that the vaccine reduces infection in asymptomatic cases by about 89 percent and in symptomatic cases by about 94 percent.
The study showed promising results in late January when researchers saw a 31 percent drop in COVID-19 hospitalizations among those vaccinated, the New York Times reported.
“The vaccinations are a very good tool, but they are hardly the end,” warned Eran Kopel, an epidemiologist at Tel Aviv University. “It is a dynamic virus that has surprised the scientific world with its rapid pace of change and diversity.”
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Kopel said the data from the Ministry of Health is promising, but that further studies are needed.