Quadrivalent recombinant influenza vaccines contain three times the amount of hemagglutinin protein as standard-dose egg-based vaccines, and the recombinant formulation is not susceptible to antigenic ...

Seasonal influenza causes substantial illness and death in adults 50 years of age or older, even with current vaccines. An investigational messenger RNA (mRNA)–based vaccine called mRNA-1010 encodes ...

"Knowing it's COVID is important because that can actually change your decision about when you're ready for a booster, the ...

Add Yahoo as a preferred source to see more of our stories on Google. There are currently two options for at-home flu testing. Here's what you need to know. (Photo illustration: Yahoo News; photos: ...

Medical professionals can usually collect samples very quickly. However, people may have to wait for the results. While rapid tests take only around 15 minutes, slower tests may require an 8-hour wait ...