Pfizer COVID-19 vaccine’s protection against severe disease holds steady over six months
The Pfizer / BioNTech COVID-19 vaccine’s protection against severe cases of the disease holds steady after six months, according to new data released by the companies. But its ability to protect people from developing any symptoms of the disease dropped over time, the analysis showed.
from Pocket https://www.theverge.com/2021/7/28/22598151/pfizer-covid-vaccine-efficacy-drop-booster
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