Tag Archives: vaccine

Pfizer COVID-19 vaccine efficacy drops to 84% after 6 months, preprint study suggests

A new study involving the Pfizer-BioNTech COVID-19 vaccine suggests the jab’s efficacy drops to around 84% about six months after the second dose. The study, which has not yet been peer-reviewed and was published on medRxiv, was supported by Pfizer and BioNTech, concluding that despite “a gradually declining trend in vaccine efficacy,” it still was… Read More »

NIH ‘very concerned’ about serious side effect in AstraZeneca coronavirus vaccine trial

“The highest levels of NIH are very concerned,” said Dr. Avindra Nath, intramural clinical director and a leader of viral research at the National Institute for Neurological Disorders and Stroke, an NIH division. “Everyone’s hopes are on a vaccine, and if you have a major complication the whole thing could get derailed.” A great deal… Read More »