Coronavirus: Sheba says the Pfizer vaccine is 75% effective after a single dose



Data released by Sheba Medical Center by Tel Hashomer on Saturday showed that coronavirus infection decreased by 75% after the first dose of the Pfizer coronavirus vaccine.

The data, published in the peer-reviewed Lancet Medical Journal, focuses on a study of approximately 10,000,000 Sheba healthcare workers, of whom 7,000 received the first dose in January. Between 15-28 days after vaccination, the Sheba team found a 75% reduction in all infections and an 85% reduction in therapeutic infections.

According to Prof. Gili Regev-Yochena, director of the hospital’s infectious disease epidemiology unit, only 170 people became infected during the two-week period. Of those who became infected due to the virus, 99 showed symptoms. Eighty of the sick were unvaccinated.

“In real life, the data looks at least as good as in clinical trials,” Regev-Yoshey said. “The first dose is even more effective than we thought.”

He said the hospital is now completing research on the effect of the second dose, which he said researchers still believe is necessary. However, he noted that the research supports the British government’s decision to extend the time between the first and second shots of the vaccine so that more people can be inoculated.

“This is the first study to evaluate the effectiveness of a single dose of vaccine in real-life situations and demonstrate early efficacy even before the second dose is given,” said Prof. L. Lesham, director of Sheba’s Department of Travel and Tropical Medicine.

Some Israeli health funds and researchers have released preliminary data on the country’s vaccination campaign. This is the first study to be published in a peer-reviewed journal.

Regev-Yoche said additional reports are in the works.