[Chief Pagan]

Data published by Israel’s Ministry of Health in late July suggested that the Pfizer shot was just 39 percent effective against preventing infection in the country in late June and early July, compared with 95 percent from January to early April. In both periods, however, the shot was more than 90 percent effective in preventing severe disease.

Experts warn that these early assessments have not been scientifically proven: The small numbers of cases involved, Israel’s testing policies and a host of other biases could have skewed the results.

A preliminary study released Wednesday by Maccabi, an Israeli health-care provider, found that a booster shot of the Pfizer vaccine provided 86 percent effectiveness against infection in people aged over 60, a week or more after receiving the third dose.

https://www.nytimes.com/2021/08/18/w...s-booster.html

For what it's worth...