Norovirus

**Semantic type:** Virus

**Definition:** A genus of non-enveloped, capsid covered viruses with T=3 icosahedral symmetry, in the family Caliciviridae. The genome is composed of a linear, single-strand of positive sense RNA. Noroviruses are transmitted by the fecal-oral route and cause gastroenteritis in humans.

**Synonyms:** - NOROVIRUS - NoV - Norwalk-like virus