Vaccines
Latest about vaccines

When should you get a flu shot? What to know for the 2023-2024 flu season
By Nicoletta Lanese last updated
When should you get a flu shot, and which shot should people with egg allergies get? Here's CDC guidance for the 2023-2024 flu season.

RSV: Symptoms, treatments, antibodies and vaccines
By Rachael Rettner last updated
In healthy children and adults, RSV typically causes mild, cold-like symptoms, but it can cause more serious disease in infants, young kids and older people.

FDA approves 1st RSV vaccine for use in pregnancy to stop infection in newborns
By Nicoletta Lanese published
The FDA just approved an RSV vaccine that can be given in the third trimester of pregnancy.

Coronavirus variants: Facts about omicron, delta and other SARS-CoV-2 mutants
By Nicoletta Lanese, Rachael Rettner last updated
Here's a look at the science behind SARS-CoV-2 variants, including the now-dominant omicron and its many defunct relatives.

Moderna says its RSV vaccine is 84% effective in older adults
By Nicoletta Lanese published
Moderna announced positive results from its late-stage RSV vaccine trial in older adults.

This year's flu shots are a 'very good match' to circulating strains, health officials say
By Nicoletta Lanese published
This year's flu shots match the circulating strains well, early data show.

New RSV vaccine given in pregnancy protects newborns from illness, Pfizer says
By Nicoletta Lanese published
The drugmaker Pfizer announced positive trial results for its RSV vaccine designed to protect newborns.

A Vaccine for the Common Cold May Be Possible
By Sara G. Miller last updated
A vaccine against the common cold may be possible, new research in mice and monkeys suggests.
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