| characterization and seroepidemiology of a type 5 astrovirus associated with an outbreak of gastroenteritis in marin county, california. | the marin county strain of type 5 astrovirus was associated with two separate outbreaks of nonbacterial gastroenteritis in california in 1978. a safety-tested, bacterium-free filtrate prepared from a stool specimen of an individual who was ill during the original outbreak was given orally to 19 adult volunteers. one volunteer developed a gastrointestinal illness, and nine had serologic responses. several diarrheal stool specimens from the ill volunteer contained a large number of 27-nm particles ... | 1993 | 8385155 |