Quote Originally Posted by tpol View Post
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
Yes, it is because the AZ uses adenoviral vector technology to deliver the genetic code for the COVID spike protein. Adenovirus is just like the virus that causes the common cold. When you get your first shot of AZ, your body will build up immunity against the adenovirus itself. If you then get the second shot too early, that immunity built up from the first shot will instantly kill the adenovirus in the second shot before it could finish the job. That is why it is advisable to wait for that long before getting the second AZ shot, so that your own adenovirus immunity dissipates enough for you to get infected by it again. You need to actually get a bit sick from that jab to know it has had an effect
The other thing to keep in mind is not to be fooled by these percentages of effectiveness. 55% effective does not mean everyone will get 55% resistance against COVID. It means 55% of people will get the vaccine effect, 45% will get nothing because the adenovirus failed to infect them. It's very much a yes or no, not in between.

After researching adenoviral vector vaccines in more detail, I'm more and more convinced the Gov is completely ignorant to how these things actually work. For them to push us to take the second shot earlier to give us "at least some" protection earlier is a big mistake.