This doesnt include all the ppl who caught covid and will not need the vaccine
The flaw though is that the ppl who took astra 2nd shot after only 4 weeks might end up in hospital if they catch covid
The study found leaving less than six weeks between the initial shot and the booster gave 55.1 per cent efficacy (protection from symptomatic disease). Leaving 6-8 weeks between shots increased efficacy to 59.9 per cent, and waiting 9-11 weeks, efficacy was 63.7 per cent.
However, if the gap was 12 weeks or longer efficacy jumped to 81.3 per cent.
https://www.business-standard.com/ar...1000238_1.html