On Monday Israel has initiated trials of a fourth Covid-19 vaccine dose, or its second round of a booster, which is being conducted on 150 medical workers who took their third booster shot of the Pfizer-BioNTech vaccine in August, according to The Associated Press. Israel is believed to be the first country in the world to initiate such a program as a second booster.

https://www.zerohedge.com/covid-19/israel-starts-4th-covid-dose-trial-while-pushing-booster-children-12