High-income countries snapped up vaccines when the disease hit them, leaving none for countries that have battled the virus for years, in an echo of the Covid response.
Tag: Clinical Trials
U.K. Approves Covid Booster Vaccine That Targets Two Variants
Britain is the first country to approve the Moderna-made vaccine, which generated a strong immune response against both the original virus and the Omicron variant.
Updated Covid Shots Are Coming. Will They Be Too Late?
The government has greenlit new vaccines to defend against the latest Omicron variants. But the shots won’t arrive until the fall, and cases are rising now.
CRISPR, 10 Years On: Learning to Rewrite the Code of Life
The gene-editing technology has led to innovations in medicine, evolution and agriculture — and raised profound ethical questions about altering human DNA.
A Better Way to Measure Immunity in Children
Some scientists believe that a clearer picture of Covid vaccine efficacy could have emerged sooner if investigators had tracked certain immune cells, not just antibodies.
J. & J. Booster Protects Against Severe Omicron, Study Says
Two shots of the vaccine reduced the risk of hospitalization from the fast-spreading variant by 85 percent, a clinical trial found.
Israel Study Will Test Effectiveness of 4th Vaccine Dose
A decision on whether to offer the additional shot, and for whom, is expected within days.
Merck Says Its Covid Pill Is Less Effective in a Final Analysis
The drug, molnupiravir, reduced the risk of hospitalization and death in high-risk Covid patients by 30 percent. An earlier analysis had found a 50 percent reduction.
Pfizer Says Its Vaccine Is Highly Effective in 5- to 11-Year-Olds
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.
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.