Noroviruses are a group of related, single-stranded RNA, non-enveloped viruses that cause acute gastroenteritis in humans. Noroviruses are highly contagious and as few as 10 viral particles may be sufficient to infect an individual. 50% of all food-borne outbreaks of gastroenteritis can be attributed to noroviruses
Source : CDC : (Centers for Disease Control and Prevention) Tested by Midwest Research Institute Inactivation Rate 99+%
