Researchers pushed back after the C.D.C. director asserted that vaccinated people “do not carry the virus.”
Tag: Clinical Trials
A ‘Game Changer’ for Patients With Esophageal Cancer
A drug that unleashes the immune system offers a rare glimmer of hope for those with a cancer that resists most treatments.
The Pfizer-BioNTech Vaccine Is Said to Be Powerfully Protective in Adolescents
A clinical trial found no symptomatic infections among vaccinated children ages 12 to 15, the companies said, and there were no serious side effects. The data have not yet been reviewed by independent experts.
Pfizer Begins Testing Its Vaccine in Young Children
Other drug makers have begun similar trials of their Covid-19 vaccines. If they work in children younger than 12 as expected, it will be easier for the U.S. to reach herd immunity.
AstraZeneca Releases Fuller Data Backing Its Vaccine
The company said its shot was 76 percent effective at preventing Covid-19, a hair lower than the number it announced earlier this week.
U.S. Health Officials Question AstraZeneca Vaccine Trial Results
According to federal officials, an independent panel of medical experts said the promising results announced by the company on Monday may have relied on “outdated information.”
AstraZeneca’s Covid-19 Vaccine Is Found to Be 79% Effective in U.S. Study
The company is preparing to apply for emergency authorization from the Food and Drug Administration. But the shot may not be needed in the United States.
The AstraZeneca Vaccine: Should You Be Concerned?
There is no evidence so far of a link between the AstraZeneca shots and a few new cases in Europe of serious illness and deaths. But investigations are underway.
The U.S. Is Sitting on Tens of Millions of Vaccine Doses the World Needs
Those tens of millions of doses from AstraZeneca are waiting for trial results, while countries that authorized the vaccine beg to have them.
As Covid Deaths Soar in Brazil, Bolsonaro Hails an Untested Nasal Spray
Vaccines and critical-care beds are in short supply. Yet President Jair Bolsonaro is railing against social distancing and calling an experimental treatment from Israel “miraculous.”