phylogenetic analysis of nucleoprotein (n) gene of measles viruses prevalent in okinawa, japan, during 2003-2007. 200818503185
[epidemiology of subacute sclerosing panencephalitis in okinawa, japan--the second report 1977-1999].there were 16 cases (11 males and 5 females) of sspe in okinawa from 1977 to 1999. the incidence was 0.58 per million population per year for the last 23 years, being higher than in other reports in japan. six of the 16 cases contracted measles in 1990. the measles antibody of sspe cases after 1989 became lower than previously.200414737859
current status of measles in japan.approximately 20,000 to 30,000 cases of measles are reported annually in japan, although the actual number of measles infections is considered to be five to ten times higher than the number of reported cases. despite the availability of effective and safe live attenuated vaccines, regional outbreaks in okinawa, transmission in adults, and secondary vaccine failures continue. recent advances in molecular technology have contributed to molecular epidemiological studies, new concepts of asymptomati ...200312673398
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