Human noroviruses in swine and cattle.

GIII (bovine), GII.18 (swine), and GII.4 (human) norovirus sequences, were isolated from animal faecal samples demonstrating that GII.4-like strains can be present in livestock. In addition, GII.4-like noroviral RNA was detected from a retail meat sample. This finding highlights a possible route for indirect zoonotic transmission of noroviruses through the food chain. Emerging Infectious Diseases 2007;13(8):1184-8.