07-08-2021, 12:45 AM
How sia? After one year no full protection liao. Those who took pfizer feel cheated? 
Pfizer says immunity can drop to 83% within four months in people who got its COVID-19 shot, further bolstering the company case for a booster - MarketWatch

Pfizer says immunity can drop to 83% within four months in people who got its COVID-19 shot, further bolstering the company case for a booster - MarketWatch