Moderna CEO Stephane Bancel on Thursday said the efficacy of boosters against COVID-19 will likely decline over time, and people may need a fourth shot in the fall to increase their protection.
With infections at all-time highs in the U.S., the clinical picture is now coming together and starting to confirm what other countries have found — a typical case of omicron not only presents slightly differently but also likely carries a lower chance of getting seriously ill.
The number of Americans hospitalized with COVID-19 reached more than 126,000 this week — the highest level in a year. But this wave of the pandemic looks different from what came before, with dueling variants on the move.
Chicago broke its record this week for the number of people hospitalized with COVID-19. Currently, about 31% of ICU patients in the city have COVID-19.
A vaccine authorized in December for use in India may help solve one of the most vexing problems in global public health: How to supply lower-income countries with a COVID-19 vaccine that is safe, effective and affordable.
LONDON — New COVID-19 variants are likely to keep on emerging until the whole world is vaccinated against the virus, experts warn, saying that the sharing of vaccines is not just an altruistic act but a pragmatic one.