OBJECTIVETo identification and analysis Aichi virus from diarrhea and normal children in Lanzhou, and discuss the relationship between Aichi virus and Infant Diarrhea.

METHODSAccording to the literature published data, Using RT-PCR method to amplified Aichi virus 3CD fragment and the positive products were sequenced and determined, and made the alignment analysis between the nucleotide sequences of the amplified fragment with the known sequence of this virus.

RESULTSThere was 1 case detection of Aichi virus in the 46 hospitalized children with diarrhea and 299 children with diarrhea out-patients specifically, Overall detection rate was 0.06%, and there was no Aichi virus was detected in normal control children. 2 viral 3CD gene and the known reference strains of nucleotide sequences were 97%, while phylogenetic analysis showed that genotype of 2 viral belongs to the B.

CONCLUSIONSThere existed B Genotype of Aichi virus in China, and more research is needed to clarified the etiology and epidemiology of Aichi virus characteristics.