| an outbreak of norwalk-like virus infection in tokyo and saitama in late 1995. | | 1996 | 8890552 |
| [antibody prevalence against astrovirus according to age groups]. | a study on the prevalence of antibodies against human astrovirus serotype 1 (hastv-1) and 2 (hastv-2) was carried out in 170 serum samples obtained from different age groups in tokyo and saitama, japan. prevalence of specific igg antibodies to both hastvs showed decreasing tendency after birth and reached a minimum at the 3-5 months age group. then, prevalence of antibodies to both serotypes increased after 6 months old, and nearly reach to 100% by the third year of life. the antibody titer to b ... | 1999 | 10423948 |
| existence of multiple outbreaks of viral gastroenteritis among infants in a day care center in japan. | a total of 921 fecal specimens collected from 44 infants in a day care center (dcc) in tokyo, japan during june 1999 to july 2000 were tested for the presence of rotavirus, norovirus, sapovirus, astrovirus and adenovirus by reverse-transcription-multiplex polymerase chain reaction (rt-multiplex pcr) and sequence analysis. of 88 fecal specimens from infants with acute gastroenteritis, 51.1% (45) were found to be positive for diarrheal viruses. astrovirus was the most prevalent (15.9%, 14 of 88), ... | 2005 | 15841336 |
| multiple viral infections and genomic divergence among noroviruses during an outbreak of acute gastroenteritis. | an epidemic outbreak of both norovirus (nv) and astrovirus (asv) occurred on a research ship surveying tokyo bay, causing acute gastroenteritis in 26 of its 37 crew members. the presence of viral pathogens in fecal specimens was analyzed, and noroviruses were identified by reverse transcription-pcr in 18 (48.6%) of these specimens. in addition, astroviruses were identified in 14 (37.8%) of the fecal samples from the affected crew members, and multiple viral infections of both nv and asv were obs ... | 2006 | 16517856 |