RESUMO
BACKGROUND: Small round structured virus (SRSV) is one of the common etiologic agents of viral gastroenteritis in childhood. However, SRSV has not easily been detected in many diarrheal outbreaks. Therefore, we experienced simultaneous outbreak of SRSV enteritis in two elementary schools, therefore, we analyzed the result of the surveillance. METHODS: We interviewed the pupil of two schools and questioned their demographic data, presence of gastrointestinal symptoms, contact with symptomatic persons within the last two weeks, and dietary history within the last one week in school. The specimens of the symptomatic pupil were collected for identification of bacteria (Shigella spp, Salmonella spp, E.coli O157 : H7) and viruses (Norwalk agent, SRSV, adenovirus, and astrovirus). RESULTS: The number of symptomatic patients was 193 (193/2843, 6.8%) and the distribution of symptom onset was unipolar. Frequent symptoms of the patients were abdominal pain (176/193, 91.2%), headache (111/193, 57.5%), vomiting (102/193, 52.8%), diarrhea (83/ 193, 43.0%), febrile sense (79/193, 40.9%), nausea (73/193, 37.8%), chilling (49/193, 25.4%), and tenesmus (8/193, 4.1%). We identified SRSV in 9 cases by PCR method, and analyzed the RNA polymerase gene by DNA sequencing; 2 genogroup (Genogroup I, II) and 3 genotype. CONCLUSION: We confirmed SRSV enteritis with different genotypes in two concurrent outbreaks. DNA sequencing and comparison of genotype among the isolated SRSV in near future are be necessary
Assuntos
Humanos , Dor Abdominal , Adenoviridae , Bactérias , Diarreia , Surtos de Doenças , DNA , RNA Polimerases Dirigidas por DNA , Enterite , Gastroenterite , Genótipo , Cefaleia , Náusea , Reação em Cadeia da Polimerase , Pupila , Salmonella , Análise de Sequência de DNA , VômitoRESUMO
BACKGROUND: Small round structured virus (SRSV) is one of the common etiologic agents of viral gastroenteritis in childhood. However, SRSV has not easily been detected in many diarrheal outbreaks. Therefore, we experienced simultaneous outbreak of SRSV enteritis in two elementary schools, therefore, we analyzed the result of the surveillance. METHODS: We interviewed the pupil of two schools and questioned their demographic data, presence of gastrointestinal symptoms, contact with symptomatic persons within the last two weeks, and dietary history within the last one week in school. The specimens of the symptomatic pupil were collected for identification of bacteria (Shigella spp, Salmonella spp, E.coli O157 : H7) and viruses (Norwalk agent, SRSV, adenovirus, and astrovirus). RESULTS: The number of symptomatic patients was 193 (193/2843, 6.8%) and the distribution of symptom onset was unipolar. Frequent symptoms of the patients were abdominal pain (176/193, 91.2%), headache (111/193, 57.5%), vomiting (102/193, 52.8%), diarrhea (83/ 193, 43.0%), febrile sense (79/193, 40.9%), nausea (73/193, 37.8%), chilling (49/193, 25.4%), and tenesmus (8/193, 4.1%). We identified SRSV in 9 cases by PCR method, and analyzed the RNA polymerase gene by DNA sequencing; 2 genogroup (Genogroup I, II) and 3 genotype. CONCLUSION: We confirmed SRSV enteritis with different genotypes in two concurrent outbreaks. DNA sequencing and comparison of genotype among the isolated SRSV in near future are be necessary