The influenza virus can create a host of symptoms, including headache. Discover how to distinguish a flu headache from a migraine attack, what to do about it, and when to seek medical attention.

Here's what to know about flu symptoms in 2025, how to tell if it's something else, ... a cold infection doesn’t usually cause fever or headache, but those are common with flu and COVID-19.

1918-19 "Spanish flu" A -- Caused the highest known influenza-related mortality: almost 700,000 deaths occurred in the U.S., and between 50 million to 100 million worldwide 1957-58 "Asian flu" A ...

RNA-1010 demonstrated superior relative vaccine efficacy that was 26.6% (95% CI; 16.7%, 35.4%) higher than a licensed ...

Moderna has reported positive phase 3 results for its seasonal flu vaccine, mRNA-1010, which outperformed a standard-dose ...