An infectious disease doctor explains the science behind COVID-19 vaccines at a level that children – and adults – of all ages can understand.
While emergency use authorization gets vaccines out to the public more quickly, it doesn’t skip any steps that full approval requires.
Vaccines can’t provide 100% protection, so it’s not a failure or surprise when some vaccinated people get sick with COVID-19. The good news is their cases are much less likely to be severe or fatal.
Though currently approved COVID-19 vaccines effectively provide immunity against the virus, it's unclear how long that protection will last.
Various companies use different ingredients and different delivery systems in their COVID-19 vaccines. Researchers are investigating whether it's better for individuals to mix what's available.
The COVID-19 vaccines are a smash success. But that doesn't mean they keep every vaccinated person completely free of the coronavirus.
The CDC and FDA said the benefits of the Johnson & Johnson vaccine far outweigh the low risk of developing rare blood clots and lifted a pause on the vaccine's use. A doctor explains.
It's normal for different people to mount stronger or weaker immune responses to a vaccine, but post-shot side effects won't tell you which you are.
The one-dose vaccine developed by Johnson & Johnson is temporarily halted because of potentially serious blood clots seen in six women. An immunologist explains what this means for you.
The one-dose vaccine developed by Johnson & Johnson is temporarily halted because of potentially serious blood clots seen in six women. An immunologist explains what this means for you.
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