Ongoing trials show Pfizer vaccine remains highly effective after 6 months

 - COVID-19 - Apr 1

The ongoing clinical trial of Pfizer BioNTech COVID-19 vaccine, currently in Phase 3, confirms its protection lasts at least 6 months after the second dose. The question of the length of protection thanks to a vaccine can only be answered once enough time has passed. 6 months is longer than previously known and thus the studies continue to check for future updates.

The vaccine remains to be 91% effective against disease with any symptoms for six months, the companies stated. It also confirmed the safety against the South African variant of the virus which was previously feared to have developed protection against most vaccines. The vaccines was 100% effective against severe disease and 95.3% effective against severe COVID-19 as defined by the US FDA.


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