Bats have a unique genetic ability to tolerate many viral infections. Can humans uncover their secrets?
When bodies fight back against infection, they can overwhelm themselves with their own destructive force.
It took science centuries to understand malaria. Now we’re waiting to see how the 2019 vaccine pilot works.
The World Health Organization has declared COVID-19 a pandemic. What exactly does that mean?
Scientists have found that sometimes people infected with measles later develop "immune amnesia": their bodies don't remember being sick, even with other viruses.