Earlier in the COVID-19 pandemic, as signs of waning immunity and changes in the virus prompted the rollout of additional doses of vaccine, health authorities took to urging Americans to seek out “booster” shots to improve their protection against the virus. Now, with an updated vaccine formula rolling out for the fall, officials are changing […]
Tag: Boosters
Israeli study finds fourth Covid booster protection, dissipates quickly
A fourth dose of the Pfizer/BioNTech Covid-19 vaccine seems to offer short-lived protection against infection overall, but protection against severe illness did not wane for at least several weeks, according to a new study. The study, published Tuesday in the New England Journal of Medicine, looked at the health records of more than 1.25 million […]