10-10-2021, 07:50 PM
Reports has shown that Pfizer vaccine after 2 months began to wane against covid 19. Not sure if this is reported locally, but had received a message via my WeChat group.
https://www.cnn.com/2021/10/09/health/pf...index.html
https://www.cnn.com/2021/10/09/health/pf...index.html