RESUMEN
<p><b>OBJECTIVE</b>To investigate the know gene types of main wild type measles virus strains and take measures to control measles in Jilin Province.</p><p><b>METHODS</b>Genetic characterization of 9 measles viruses isolated from 72 throat swabs or urine specimens of measles patients using CDW(150) cells line was studied in Jilin Province in 2005.</p><p><b>RESULTS</b>Sequence analysis of 450 nucleotides of COOH-terminal of nucleoprotein (N) genes of 9 isolates indicated that all were members of H(1) genotype, in which there are 7 strains of H1a and 2 strains of H1b, the H1a subgroup differed from H1b by 2.0% approximately 3.5% at the nucleotide level in the COOH-terminal of the N gene.</p><p><b>CONCLUSIONS</b>The H(1) genotype of wild-type measles viruses should be the main epidemic strain and main pathogen that caused measles outbreaks and sporadic cases in Jilin Province.</p>