@nytimes.com 2 years ago Study Shows New Covid Booster Improves Protection for Older People, Pfizer Says
@WSJ 3 years ago The pace of Covid-19 booster shots is slowing as the Omicron surge fades, fueling concerns that Americans could be more vulnerable if a new variant emerges on.wsj.com
@axios.com 4 years ago Biden admin to advise COVID vaccine booster shots for most Americans at 8 months