Researchers found that a class of antibodies in a monkey's blood provides protection from COVID-19. If that hold true for humans, a blood test may predict whether a vaccine candidate is working.
Vaccination will be voluntary, the Kremlin says, and will begin with health care workers and people with chronic medical conditions. Russia's Sputnik V vaccine is still in clinical trials.
A British regulatory agency approved the Pfizer/BioNTech vaccine Wednesday. It could be dispersed within days to the neediest people, government officials said.
The first COVID-19 vaccines to hit the market will not be approved for use in children. Researchers must figure out if the vaccines are safe and effective in kids.
Operation Warp Speed is allocating the first batch of 6.4 million COVID vaccines to states, based on population. This circumvents a CDC advisory committee, which proposed allocation based on risk.
One of the two leading vaccine candidates requires deep, deep freezing. Here's how communities are working to solve for this and how the new Moderna vaccine could help.
The vaccine is nearly 95% effective in preventing illness, according to an interim analysis of a clinical test involving 30,000 people.
Pfizer's CEO sold $5.6 million worth of stock on Monday. The company says the stock sale was made as part of a preset plan. But NPR found irregularities about when the CEO entered into that plan.
A team of independent advisers to the Centers for Disease Control and Prevention has a science-based outline for deploying a vaccine when it's ready. The goal is to stop deaths and viral spread fast.
A vaccine will only work if a lot of people can get immunized. State health officials are working furiously to design outreach and distribution plans, with little clarity from the federal government.