感染防止には3回目のワクチン接種が解決の鍵だ、と。

 

Pfizer Covid jab ‘90% effective against hospitalisation for at least 6 months’ https://t.co/22Hbe8IU5u

— Guardian Australia (@GuardianAus) October 5, 2021

 Study shows protection against severe illness stays high, but scientists say boosters key to stopping spread of infection

“In general, if the objective of vaccination is to prevent illness and prevent continued spread of infection, the information suggests need for boosters six months after completion of the first vaccine course, particularly among the most vulnerable, in whom infection may lead to more severe illness and death. This approach has already been adopted in the UK, where the booster campaign is now under way.”