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# Pfizer/BioNTech COVID-19 vaccine effectiveness drops after 6 months, study shows
- URL: https://werd.io/pfizerbiontech-covid-19-vaccine-effectiveness-drops-after-6-months-study-shows/
- Published: 2021-10-09T03:58:28.000Z
- Updated: 2021-10-09T03:58:28.000Z
- Author: Ben Werdmuller
- Tags: #Import 2025-06-13 09:24

"The effectiveness of the Pfizer vaccine in preventing infection by the coronavirus dropped to 47% from 88% six months after the second dose, according to data published on Monday that U.S. health agencies considered when deciding on the need for booster shots." Man :(

\[[Link](https://www.reuters.com/business/healthcare-pharmaceuticals/pfizerbiontech-covid-19-vaccine-effectiveness-drops-after-6-months-study-2021-10-04/)\]