The Pfizer and Moderna COVID-19 vaccines reduced the risk of both asymptomatic and symptomatic SARS-CoV-2 infection by 90% at least two weeks after the second dose and by 80% at least two weeks after the first dose in a study of 3,950 vaccinated health care and other essential workers, the Centers for Disease Control and Prevention reported today

While the findings are similar to those from Phase 3 clinical trials of the vaccines, the new study evaluated their effectiveness in real-world conditions and against asymptomatic infections, CDC said. 

“This is important because preventing both asymptomatic and pre-symptomatic infections among health care workers and other essential workers through vaccination can help prevent the spread of SARS-CoV-2 to those they care for or serve,” the agency said. 
 

Related News Articles

Headline
The Food and Drug Administration today issued a request for public comment on a series of questions regarding current approaches to evaluating artificial…
Headline
The Food and Drug Administration yesterday announced that Olympus issued a global recall of its ViziShot 2 FLEX needles manufactured prior to May 12 following…
Headline
The Advisory Committee on Immunization Practices Sept. 19 recommended that patients should consult their health care provider if they want to receive a COVID-…
Headline
The Food and Drug Administration has identified a Class I recall for Mo-Vis BVBA R-net Joysticks due to a firmware error that causes the wheelchair to ignore…
Headline
COVID-19 infections are growing or likely growing in 45 states and not changing in five states, according to the latest data from the Centers for Disease…
Headline
The Food and Drug Administration July 15 announced a recall by Sandoz on certain lots of cefazolin, due to the lots being mislabeled as penicillin G potassium…