A new study raises concerns about the mRNA vaccines' effectiveness revealing that Pfizer COVID-19 vaccine is only 42% effective against the Delta variant.
A new preprint study (read below) that raises concerns about the mRNA vaccines' effectiveness against Delta — particularly Pfizer's — has already grabbed the attention of top US administration officials.
The study found the Pfizer vaccine was only 42% effective against infection in July, when the Delta variant was dominant. "If that's not a wakeup call, I don't know what is," a senior Biden official told Axios.
The study, conducted by nference and the Mayo Clinic, compared the effectiveness of the Pfizer and Moderna vaccines in the Mayo Clinic Health System over time from January to July.
Overall, it found that the Moderna vaccine was 86% effective against infection over the study period, and Pfizer's was 76%. Moderna's vaccine was 92% effective against hospitalization and Pfizer's was 85%.But the...
Full Access
Included:
-
Access to All Articles.
-
One Plan. No Tiers.
-
No Ads.
-
Cancel anytime.
