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Journal of Tropical Pediatrics 1999 45(2):81-86; doi:10.1093/tropej/45.2.81
© 1999 by Oxford University Press
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Rotavirus subgroups, G serotypes, and electrophoretypes in cases of nosocomial infantile diarrhoea in Belem, Brazil

RHP GusmãoA1, J D'Arc P MascarenhasA1, YB GabbayA1, Z Lins-LainsonA1, FLP RamosA1, TAF MonteiroA1, SA ValenteA1, U Fagundes-NetoA2 and AC LinharesA1,Z

A1 Instituto Evandro Chagas, Fundação Nacional de Saúde, Av Almirante Barroso, 492, 66.090-000, Belém, Pará, Brasil A2 Universidade Federal de Sao Paulo, Escola Paulista de Medicina, Rua Pedro de Toledo, 441, 04039-031, Sao Paulo, SP, Brasil Z Corresponding author

From November 1992 to November 1994 stool samples were obtained from 237 children admitted to a public hospital in Belém. Rotaviruses were detected in 19.3 per cent (60/310) of faecal samples. Of these, 32.1 per cent (18/56), 20.9 per cent 938/181), and 5.4 per cent (4/73) were recorded in cases of nosocomial diarrhoea, and controls, respectively. Fifty-two (86.7 per cent) of the 60 rotavirus-positive specimens were subgrouped and the G serotypes of 55 (91.7 per cent) of them were determined. Subgroups I and II were detected in 50 per cent each of the 52 subgrouped strains. G type 2 was present in 46 (83.6 per cent) of the 55 serotyped samples; serotypes G1 and (mixed) G1 and G4 were found in 14.5 per cent and 1.8 per cent, respectively, of these specimens. Viral RNA electrophoresis showed 14 distinct patterns, including 56.7 per cent 934/60) and 43.3 per cent (36/60) of long and short profiles, respectively. In 40 (66.6 per cent) of the 60 rotavirus-positive faecal samples no enteropathogens other than rotavirus were detected. There was an increased incidence of rotavirus infection from July 1993 to February 1994. The rotavirus-related episodes of diarrhoea were more severe than those of other aetiology and grater clinical severity was not related to a specific G type, subgroup, or electrophoretype.


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