The companies reported that a lower dose of the vaccine had a 90.7 percent efficacy rate in preventing symptomatic Covid-19 in a clinical trial.
Tag: Clinical Trials
Iran Plans to Abandon One of Its Homegrown Covid Shots
The defense ministry said there was too little demand for its Fakhravac vaccine to justify producing it, and blamed the health ministry for reneging on promised orders.
Iran Plans to Abandon One of Its Homegrown Covid Shots
The defense ministry said there was too little demand for its Fakhravac vaccine to justify producing it, and blamed the health ministry for reneging on promised orders.
Mix-and-Match Covid Boosters: Why They Just Might Work
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.
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.