[Phylogenetic analysis based on hemagglutinin and neuraminidase genes between swine influenza virus and human influenza A/H3N2 virus strains isolated in Zhejiang province].

Objectives: To investigate the phylogenetic relationship between swine influenza A/H3N2 virus and the representative strains of human influenza A/H3N2 virus isolated in two epidemics in recent years through comparing the sequences within HA and NA genes.

Methods: HA and NA gene of the human representative strains were sequenced, and then phylogenetic tree with the swine and human strains isolated in the corresponding period of time were constructed.

Results: The homologies on the HA1 domain between human representative strains (A/Zhejiang/10/98, A/Zhejiang/6/99 and A/Zhejiang/8/02)and the swine strains (A/SW/Ontario/130/97, A/SW/Hongkong/4361/99 and A/SW/Hongkong/74/02) were 99.

[Study on the carbapenemase genotype and molecular epidemiology of Acinetobacter baumannii].

Objective: To investigate antibiotic resistance, clonal relatedness and carbapenemase genotype among carbapenem-resistant Acinetobacter baumannii collected from 3 comprehensive hospitals in Ningbo city, Zhejiang province.

Methods: 28 strains of carbapenem resistant Acinetobacter baumannii were collected from Ningbo Li Hui-li Hospital, Ningbo Li Hui-li Hospital, Ningbo First Hospital, and N ingbo Second Hospital. The minimum inhibitory concentrations (MIC) of these strains were examined by agar dilution and E-test method.