Warning! Waning Immunity
Apr. 23, 2022 10:03 am
WANING—After 3 doses, effectiveness of Pfizer vaccine against Omicron (BA1) hospital admission was 📌85% at <3 months but fell to 📌55% at 3-5 months. For ER admission, VE of 3 doses was 📌77% at <3 months but fell to 📌53% at 3-5 months. 2 doses worse. 🧵
https://www.thelancet.com/journals/lanres/article/PIIS2213-2600(22)00101-1/fu…