SG Talk

It also showed that the Pfizer vaccine is initially more effective than the AstraZeneca vaccine. However, about four months after the second dose, the Pfizer jab's efficacy wanes to the point where AstraZeneca's vaccine become the more effective of the two.


https://www.nzherald.co.nz/nz/covid-19-c...ZPHPPHMDU/

Don't listen to those Journalists trying to tell.They added "sugar and salt". Heard it from the horse's mouth... if it is Oxford University,  they will tell you

https://www.ox.ac.uk/news/2021-08-19-vac...tudy-covid

This is another group writing about their findings in NEMJ Medical Journal..

https://www.nejm.org/doi/full/10.1056/NEJMoa2108891

https://www.ft.com/content/49641651-e10a...8c7b7a9710

I wish our local journalists can ask Kenneth Mak to clarify validity of this finding.

Err... So those who got their shots done as early as Feb are as good as unvaccinated? Lol

Then why the differentiation of policy when Delta is the new normal? And why sinovac and sinopharm is not on the national vaccination scheme when it is inactivated vaccine that can handle Delta and other mutation better? Is MOH and sg govt getting their bearings and act rite??

The trace together app can put one expiry date like after 6 months. Moderna longer and Pfizer shorter period.