A head-to-head study of all three authorized coronavirus vaccines in the United States finds the Moderna vaccine is slightly more effective than Pfizer's in real-life use in keeping people out of the hospital, and Johnson & Johnson's Janssen vaccine comes in third.
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The public is split about evenly, 51% to 49%, on whether requiring proof of vaccination for everyday activities is an acceptable way to increase the vaccination rate, or an unacceptable infringement on personal rights.
The US has now tallied more than 40 million Covid-19 cases across the pandemic, with more than 4 million of them reported in the last four weeks alone, according to data from Johns Hopkins University.
(CNN) -- Booster doses of Johnson & Johnson's one-shot coronavirus vaccine generated a big spike in antibodies, the frontline immune sys…
"We are prepared to offer booster shots for all Americans beginning the week of September 20 and starting 8 months after an individual's second dose," US health officials said in the statement.
This would be a third shot of the current two-dose Pfizer and Moderna vaccines.
Half of the US population is fully vaccinated against Covid-19, White House Data Director Dr. Cyrus Shahpar said Friday.
A new study shows the Delta Covid-19 variant produced similar amounts of virus in vaccinated and unvaccinated people if they get infected.
It's a move that represents both the speed with which the White House is moving on the issue and also the recognition that there are an array of key stakeholders that will play prominent roles in the days and weeks ahead as the policy is implemented.