Studies show protection from omicron only strong first 3 months... That s why all coutries giving 3 rd dose to all in western countries...... As per availablae studies for symptomatic infection 60 % to 70 % protection from 3rd dose compared to just 10 % with 2 doses and past 3 months.. So far not many deaths from people who took 3 rd dose.... Waiting for more data... I took 3 rd dose after seeing this data.. Here in canada 4 th dose also started if 3 months after 3rd..... But so far no data available regarding 4 th dose advantages for omicron...