When the common cold rips through a household, it can leave a wildly uneven path of symptoms. The same cold-causing rhinovirus that produces barely a sniffle in one person can cause a week of ...

When scientists sent bacteria-infecting viruses to the International Space Station, the microbes did not behave the same way they do on Earth. In microgravity, infections still occurred, but both ...

The flu is straining hospitals and urgent cares across the United States, with the surge in infections driven by an aggressive new flu variant. Flu activity remains high in most parts of the country, ...