| prevalence and characterization of astroviruses in argentinean children with acute gastroenteritis. | among viral agents causing gastroenteritis, human astroviruses (hastvs) take second or third place, after rotaviruses and caliciviruses, as the most frequent cause of illness. the aims of this study were to determine the prevalence of hastv infection and to characterize the circulating hastv strains in children with diarrhea under 3 years of age treated between 1995 and 1998 at out- or in-patient facilities of the children's hospital in mendoza, argentina. reverse transcription-polymerase chain ... | 2004 | 14635014 |