Atlas of foodborne infections
transmitted by contaminated food and water

Atlas of Patogens Contents Information sources Glossary Administration

Astroviruses

CZ: Astroviry
EN: Astroviruses

Occurrence:
Meat and Meat Products
Water and Beverages


Category:
Viruses


Foodborne Disease:
Untitled document

Other viruses transmitted via foods
There are many other groups of enteric and gastroenteritis-causing viruses, but these are reported to be associated with foods either infrequently or not at all.


Description:
Untitled document

Astroviruses
Under the electron microscope, astroviruses appear as small, round viruses that have surface projections resembling a five- or six-pointed star (Greek astron, "star").

The illness differs from the NLV in that the incubation period is longer (3-4 days), the duration of illness is longer (often lasting for 7-14 days) and vomiting is less common, with diarrhea being the predominant symptom. In addition, the very young (<1 year) appear to be the most susceptible group, whereas NLV affect all age groups.

Many astrovirus outbreaks have been reported to occur in crèches, schools, hospital wards and nursing homes, but in many cases there was no well-defined mode of transmission.

One large food-borne outbreak has been reported. In Osaka, Japan, in 1991, a large outbreak of acute gastroenteritis occurred, affecting 4700 teachers and pupils from 14 schools in the city. The source was linked to contaminated food from a common supplier.


Pictures:

No picture to show.

<<< Back