V

Virulence

Virulence describes the extent of a pathogen’s disease-causing properties.

Virus blocker

A virus blocker is a substance that inhibits viral replication.
Z

Zika virus

The Zika virus is a flavivirus that is primarily transmitted by mosquitoes of the genus Aedes. Infection often causes no symptoms or results in a mild febrile illness.

Zoonosis

A zoonosis is an infectious disease caused by a pathogen that can be naturally transmitted between vertebrates and humans.