Norovirus is a major etiologic agent in worldwide outbreaks of gastroenteritis
associated with food as well as person - to - person transmission .
Norovirus is a major etiologic agent in worldwide outbreaks of gastroenteritis associated with food as well as person - to - person transmission .
Norovirus is a major etiologic agent in worldwide outbreaks of gastroenteritis associated with food as well as person - to - person transmission .