Pfizer COVID-19 Vaccine 94 Percent Effective Against Asymptomatic Transmission: Israeli Data

An Israeli health worker of the Maccabi Healthcare Services administers a dose of Pfizer-BioNtech vaccine to a man in Tel Aviv, Israel on Feb. 24, 2021. Jack Guez/AFP via Getty Images

Pfizer’s vaccine is 94 percent effective in preventing asymptomatic transmission of the virus that causes COVID-19, according to data from Israel.

The vaccine, co-produced with BioNTech, was also at least 97 percent effective in preventing symptomatic disease, severe-critical disease, and death, the companies and the Israel Ministry of Health said.