an outbreak of measles virus infection due to a genotype d9 at a junior high school in yamagata, japan in 2004.we investigated a measles virus (mv) outbreak that occurred at a junior high school in yamagata, japan between january and february, 2004. we received throat swab specimens from three patients at this school and carried out virus isolation with vero/hslam cells and virus genome detection by reverse-transcription polymerase chain reaction. as a result, we isolated the virus from one patient and succeeded in amplifying the mv genome from the others. further sequence analysis of the n gene revealed ...200515858288
importation of the evolving measles virus genotype d9 to yamagata, japan from thailand in 2009. 200919934546
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