A tiny insect called a midge spreads the disease, and the earliest known case dates back to 1955 in a forest worker near a ...

Roseola Roseola is a common viral illness in small children. It causes a rash that usually occurs after a fever. Image: phadungsak sawasdee/Shutterstock ...

RNase domain-mutant viruses have also been found to exhibit diminished viral load and pathogenesis in vivo in guinea pigs (which normally experience high lethality, develop human hemorrhagic ...