Here’s a look at Zika virus, an illness spread through mosquito bites that can cause birth defects and other neurological defects. Facts Sources: Centers for Disease Control and Prevention (CDC), ...

The U.S. has seen earlier and more intense surges of the flu and RSV this year than is typical, pediatrician Dr. Ryan Fulton notes.

Animals such as mosquitoes and freshwater snails, are the smallest yet most dangerous creatures, capable of killing humans.