We see a lot of data from Israel because they made a deal with Pfizer early on to trade early access to vaccine for allowing Pfizer access to anonymized health records about vaccination and infection. Thus they have some of the best data around on the effect of the Pfizer shot on a population scale.
https://www.medicalnewstoday.com/articles/delta-variant-what...
https://www.cdc.gov/media/releases/2021/s0806-vaccination-pr...
We see a lot of data from Israel because they made a deal with Pfizer early on to trade early access to vaccine for allowing Pfizer access to anonymized health records about vaccination and infection. Thus they have some of the best data around on the effect of the Pfizer shot on a population scale.