The conversation around the flu vaccine has been reignited with controversy due to renewed attention on thimerosal, a mercury ...

Moderna's new flu vaccine, based on the same mRNA technology used in its COVID-19 shot, showed promising results in a major ...

Compared to the standard shot, the mRNA vaccine had an overall vaccine efficacy that was 26.6 percent higher, and 27.4 ...

The preservative is in a small share of flu shots and has been studied for decades. Experts say it’s safe — despite Kennedy’s long opposition.