Table 2.

Food- and waterborne diseases.

Disease (other names)	Virus and source	Characteristics of virus	Target population	Incubation period	Symptoms	Duration of illness	Mortality
Parvovirus gastroenteritis (non-bacterial gastroenteritis, viral gastro-enteritis, winter vomiting disease	Fecal parvoviruses (Cockle, Wollan, Ditchling, Parramata), present in stools of infected persons	Small, round, featureless, 23–26 nm in diameter with single-stranded DNA, some are immunologically distinct	All age groups	1–2 days	Vomiting, diarrhea malaise, fever, nausea, abdominal cramps	Usually 1–3 days, virus may be excreted for several weeks after symptoms subside	Probably low
Rotavirus gastroenteritis (non-bacterial gastro-enteritis, viral gastroenteritis)	Rotaviruses, present in stools of infected persons	About 70 nm in diameter, double-capsid structure, wheel-like in appearance, double-stranded RNA, several sero-types exist	All age groups, highest incidence in children	1–3 days	Vomiting, diarrhea myalgia, headache, fever, cramps, nausea, dehydration	4–10 days	Low