For a second time this season, at least 41 states are reporting high or very high levels of the flu. Here's how to stay safe.

Yet, uptake levels of vaccines in the US would tell a different story. As of mid-December, only 20.9 percent of adults in the ...

A nasal vaccine for COVID-19 – based on technology developed at Washington University in St. Louis – is poised to enter a phase 1 clinical trial in the U.S. after an investigational new drug ...