Effectiveness of 2 of 3 COVID-19 Vaccines Used in US Drops Below 50 Percent After 6 Months: Study

Posted on AllSides November 10th, 2021
From The Right
(Mary Altaffer/AP Photo)

The effectiveness of the three COVID-19 vaccines available in the United States has declined in recent months, with protection against infection falling under 50 percent for two of them after six months, according to a new study.

Moderna’s COVID-19 vaccine dropped to 58 percent in September from 89.2 percent effectiveness in March, researchers found. During the same time frame, Pfizer’s COVID-19 vaccine fell to 43.3 percent from 86.9 percent, and Johnson & Johnson’s shot declined to 13.1 percent from 86.4 percent.

Dr. Stephen Hahn, head of the Food and Drug Administration during the...

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