Live-attenuated viral vaccines (LAV) have been used safely for several decades in healthy individuals to protect against diseases with great success. In immunocompromised hosts their use is ...

Two forms of the polio vaccine are available: injected inactivated polio vaccine (IPV or Salk vaccine), introduced in 1955 and oral live-attenuated polio vaccine (OPV or Sabin vaccine), introduced ...

Poppy — a viral baby pygmy hippo at the Metro Richmond Zoo — got her own livestream on Jan. 13, the Virginia zoo announced.