The F.D.A. may authorize booster shots of vaccines different from the ones that Americans originally received. The science behind the move is promising.
Tag: Clinical Trials
Moderna vs. Pfizer: Both Knockouts, but One Seems to Have the Edge
A series of studies found that the Moderna vaccine seemed to be more protective as the months passed than the Pfizer-BioNTech vaccine. Here’s why.
Ivermectin Won’t Treat Covid-19, but Demand Is High Anyway
Clinical trials have repeatedly failed to show that the drug is effective against the virus. Still, U.S. demand is high.
An Experimental H.I.V. Vaccine Fails in Africa
Researchers ended a large trial in South Africa after finding that an experimental vaccine offered little protection.
Britain will extend vaccination to 16- and 17-year-olds.
The nation, which has not been vaccinating young people without underlying conditions, altered its approach after balancing “potential benefits and harms.”
Covid Is Especially Risky for People With H.I.V., Large Study Finds
An H.I.V. infection increases the odds of dying from Covid-19 by at least 30 percent, researchers said.
Citing the Delta Variant, Pfizer Will Pursue Booster Shots and a New Vaccine
Scientists were critical of the announcement, pointing to evidence that the current two-dose regimen is powerfully effective against the coronavirus.
Should People With Immune Problems Get Third Vaccine Doses?
France is handing out third shots of the two-dose vaccines to cancer patients and others with immune system impairments. In the United States, patients like these are on their own.
Johnson & Johnson Vaccine Protects Against Delta Variant, Company Reports
The vaccine also produced long-lasting immune responses, researchers said. Booster shots seem unnecessary, at least for now.
Three Studies, One Result: Coronavirus Vaccines Point the Way Out of the Pandemic
New scientific research underscores the effectiveness of vaccines and their versatility in the fight against the coronavirus.