Pfizer COVID-19 Vaccine 97 Percent Effective Against Symptomatic Disease

Pfizer COVID-19 Vaccine 97 Percent Effective Against Symptomatic Disease

Analysis of data from Israel's vaccination campaign also showed vaccine to be 94 percent effective against asymptomatic disease

FRIDAY, March 12, 2021 (HealthDay News) -- The Pfizer COVID-19 vaccine is 97 percent effective in preventing symptomatic disease in actual use, which is better than previously thought.

The analysis of data gathered from Jan. 17 to March 6 from Israel's vaccination campaign also showed that the vaccine is 94 percent effective against asymptomatic disease, CBS News reported.

"We are extremely encouraged that the real-world effectiveness data coming from Israel are confirming the high efficacy demonstrated in our phase 3 clinical trial and showing the significant impact of the vaccine in preventing severe disease and deaths due to COVID-19," said Luis Jodar, Ph.D., senior vice president and chief medical officer of Pfizer Vaccines.

A previous real-world study revealed that the vaccine was 94 percent effective against symptomatic disease and 92 percent effective against asymptomatic disease, CBS News reported.

CBS News Article

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