Some scientists are taking a new approach to vaccination, making vaccines delivered via nasal sprays or tablets that would deploy more immune defenders to the body's front lines: the lining of the mouth, nose and throat.
A U.K. patient with a severely weakened immune system had COVID-19 for almost a year and a half, scientists reported. Get that, and more COVID news from today, here.
Vaccine advisers to the US Centers for Disease Control and Prevention continue to mull over what the future of Covid-19 booster shots might look like -- and they acknowledge that entirely different vaccine formulations could be needed.
When Delta Air Lines referred to Covid-19 as an "ordinary seasonal virus" after a federal judge struck down the Biden administration's mask mandate for public transportation, they were partly right: there is some evidence that it is seasonal. But it is far from ordinary, and it's still not the same as the flu.
On Monday, a federal judge in Florida struck down the Biden administration's mask mandate for airplanes, trains and other public transport. Within hours, several major airlines announced that they would no longer be enforcing mask requirements, and mask-wearing is optional.
ANAHEIM, Calif. — Justin Cohen has waited for the gates to the Coachella Valley Music and Arts Festival to reopen for a long time. How long? The 32-year-old West Hollywood dog walker bought his ticket in June 2019 and has held onto it ever since. “I remember when it got postponed in March 2020,” Cohen says. “I said right then, ‘When we can go back to Coachella, it’ll be almost like an ...
Pfizer says new data shows healthy 5- to 11-year-olds could benefit from another kid-sized shot.
A third shot of the children's dose of Pfizer/BioNTech's Covid-19 vaccine raised Omicron-fighting antibodies by 36 times in kids 5 through 11 years of age, the companies said in a news release Thursday. The companies plan to request emergency use authorization from the US Food and Drug Administration for a booster dose for this age group.
As the United States navigates a third year of the Covid-19 pandemic, cases are rising modestly in the Northeast, Philadelphia has reinstituted an indoor mask mandate and some colleges are requiring masks during the final days of the spring semester.
Covid-19 case numbers have begun to edge up in the United States, and nearly all of them are caused by the Omicron subvariant BA.2.
A recent outbreak of Covid-19 cases among officials in Washington, with dozens testing positive after attending the Gridiron Club Dinner, has put the concept of Covid-19 superspreading back in the spotlight.
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.
Advisers to the US Food and Drug Administration are scheduled to meet Wednesday to get a clearer picture of what the future of Covid-19 booster shots might look like.
The Omicron coronavirus variant may be reaching around the world, but different places are seeing significantly different effects.
The youngest group eligible to be vaccinated against Covid-19 in the US, children ages 5 to 11, is also the least vaccinated one.
U.S. regulators today authorized another COVID-19 booster for people age 50 and older, a step to offer extra protection for the most vulnerable in case the coronavirus rebounds. Here's that and more COVID news.
LOS ANGELES — Coronavirus cases are on the upswing worldwide, prompting some officials to warn that California could see increases this spring because of the omicron subvariant BA.2 even though cases so far have been modest. The World Health Organization has recorded the first week-over-week increase in global coronavirus cases since late January, with cases rising 8% compared with the ...
The US public and even some health experts may have underestimated the Covid-19 vaccine made by Janssen, a division of Johnson & Johnson, new data shows. And there's emerging evidence that it could still play an important role ahead.
Covid-19 cases are rising in Britain just two weeks after UK Prime Minister Boris Johnson lifted most mitigation measures. Is another COVID wave in the future for the US?
To many parents' dismay, a new report from the US Centers for Disease Control and Prevention found that the Covid-19 vaccine is less effective against the Omicron variant for children ages 5 to 11 than for older children and adults. Two doses of the Pfizer/BioNTech vaccine reduced the risk of Omicron infection by 31% among children 5 to 11 years old, compared with 59% among those 12 to 15.
Two weeks after the United Kingdom dropped its last remaining Covid-19 mitigation measure -- a requirement that people who test positive for the virus isolate for five days -- the country is seeing cases and hospitalizations climb once again.