Masks prevent people from transmitting the coronavirus to others, scientists now agree. But a new trial failed to document protection from the virus among the wearers.
Tag: Clinical Trials
How the Out-of-Control Pandemic Is Speeding the Testing of Vaccines
The surge in coronavirus cases worldwide is helping researchers measure more quickly how well their vaccines protect against Covid-19.
Brazil Halts Trial of Chinese Coronavirus Vaccine, CoronaVac
The government offered little explanation as to why it had stopped testing a promising coronavirus shot; an institute involved in the trial said a participant’s death was unrelated to the vaccine.
Shot to Prevent H.I.V. Works Better Than Daily Pill in Women
Researchers ended a clinical trial of the drug early because the results were so convincing. The more effective drug would be given in six injections a year instead of as 365 daily pills.
To Test Coronavirus Vaccines, UK Study Will Intentionally Infect Volunteers
The hotly contested strategy of deliberate exposure, known as a human challenge trial, could speed up the process of identifying effective coronavirus vaccines.
A Dose of Optimism, as the Pandemic Rages On
The months ahead will be difficult. But the medical cavalry is coming, and the rest of us know what we need to do.
Russia Is Slow to Administer Virus Vaccine Despite Kremlin’s Approval
After announcing the first government clearance for a coronavirus vaccine, Russia delayed distributing it. It remains unclear how many people have received it.
From Asia to Africa, China Promotes Its Vaccines to Win Friends
With pledges of a coronavirus vaccine, China is on a charm offensive to repair strained diplomatic ties and bolster engagement with other countries.
Safety Review Begins Into AstraZeneca’s Coronavirus Vaccine Trial
A participant in the company’s late-stage coronavirus vaccine trial reportedly developed severe neurological symptoms. Now experts must assess whether the vaccine was responsible.
AstraZeneca Pauses Vaccine Trial for Safety Review
The company halted late-stage trials of its coronavirus vaccine because of a serious suspected adverse reaction in a participant.