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Experts say Pfizer COVID-19 vaccine remains effective for six months

WORLDWIDE – Pfizer says protection from its COVID-19 vaccine lasts at least six months after the second dose.

The pharmaceutical company has been studying the vaccine in more than 46-thousand volunteers. 

Among that group… 77 people who were vaccinated tested positive for COVID-19. 

None of them exhibited severe disease as defined by the centers for disease control and prevention. 

Pfizer says this makes its vaccine 100 percent effective against what the c-d-c calls severe disease… and 95 percent effective against the food and drug administration’s definition. 

Previous estimates indicated protection lasts at least 90 days. 

Pfizer’s ongoing phase three trials also appear to show the vaccine provides full protection against the b-one-three-fifty-one variant of the virus… commonly referred to as the South Africa variant.

CNN Health

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