Pfizer and Moderna now both have new bivalent COVID booster shots that not only target the original strain of coronavirus, but also the highly contagious omicron subvariants that are dominant ...

Health officials say it’s time for most Americans to get another booster dose—this time, with a new Omicron-specific shot made by either Pfizer-BioNTech (for people 12 and older) or Moderna (for ...

When talking about clothing or accessories, mixing and matching is second nature, but you might not expect the same approach to COVID-19 vaccine booster shots. So, if the Centers for Disease Control ...

Video above: FDA votes to authorize more COVID-19 boosters, mix-and-matching doses in some casesA booster dose of the Pfizer/BioNTech coronavirus vaccine was found to have a high efficacy — 95.6% — ...

More Americans will soon be able to get a COVID-19 booster shot. A booster is currently available for people who received the Pfizer vaccine at least six months ago. Recipients of the booster must be ...

With COVID-19 vaccinations ramping up to a fourth dose (i.e., second booster), keeping track of what formula to get might start to get a bit tiresome. There are a lot of different guidelines from both ...

A government study of 450 people says that "mixing vaccines may enhance the immune response" to the COVID-19 virus. In light of that research by the National Institutes of Health, some public health ...

BOSTON - Dr. Mallika Marshall is answering your coronavirus-related medical questions. If you have a question, email her or message her on Facebook or Twitter. Dr. Mallika is offering her best advice, ...

For those who are planning to get a COVID booster shot, will they need to get the same vaccine as their primary series or can they mix and match? The answer depends. Stream NBC 5 for free, 24/7, ...