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At a series of listening sessions, participants voiced worries that the development of a COVID-19 vaccine is being politicized and rushed. Public health experts are taking vaccine hesitancy seriously.

There's evidence that certain vaccines boost the body's defense against many kinds of illness. Scientists are investigating whether this benefit extends to protection from COVID-19.

Volunteers getting the shot help determine if a candidate vaccine works. But what with social distancing and masks, scientists must discern if it's the shot or these other measures preventing illness.

The betterment of childhood vaccination rates has been a global success story. A new report on the impact of the pandemic offers reason for concern � and optimism.

Today is the first day of school for Vermont K-12 students, and some of them are stepping foot in their school building for the first time since March.�

Several COVID-19 vaccine candidates are being tested now. But why does it take 30,000 volunteers to know if one is safe and effective? And what does it mean to say a vaccine candidate is working?

A growing number of researchers think until there's an effective vaccine, the coronavirus will simply persist in the population, causing illness indefinitely. Better to squelch the spread instead.

A coronavirus vaccine could become ineffective if the virus were to undergo certain genetic changes. But so far, so good: Scientists see no evidence that's happening.

As researchers herald dexamethasone as a potential breakthrough treatment for critically ill patients, Dr. Kirsten Lyke says publicizing research that hasn't been rigorously vetted could erode trust.

To speed vaccine production from years to months, companies must start making a vaccine in large quantities even before it's clear a vaccine works.