Vaccinia virus

**Definition:** The type species of ORTHOPOXVIRUS, related to COWPOX VIRUS, but whose true origin is unknown. It has been used as a live vaccine against SMALLPOX. It is also used as a vector for inserting foreign DNA into animals. Rabbitpox virus is a subspecies of VACCINIA VIRUS.

**Tree numbers:** - B04.280.650.160.650.900

**Synonyms:** - Poxvirus officinale