Israel: Booster shots increase protection by 4x against delta variant
Science unscripted - A podcast by DW.COM | Deutsche Welle

Data from Israel's health ministry shows that a 3rd jab of Pfizer-BioNTech significantly improves protection against the delta variant — especially when it comes to hospitalizations. The findings are important as separate data shows COVID-19 immunity decreasing in the months after a second jab.