Israel data: real world use of Pfizer shots.
apnews.com
Article says that there are variants present in the population. Vaccine is crushing them.

Pfizer COVID-19 vaccine works well in big 'real world' test
A real-world test of Pfizer’s COVID-19 vaccine in more than half a million people confirms that it’s very effective at preventing serious illness or death, even after one dose.

The vaccine was 92% effective at preventing severe disease after two shots and 62% after one. Its estimated effectiveness for preventing death was 72% two to three weeks after the first shot, a rate that may improve as immunity builds over time.
It seemed as effective in folks over 70 as in younger people.
Article says that there are variants present in the population. Vaccine is crushing them.