Abstract

Even though 2-dose measles vaccination coverage rate was maintained at more than 95%, the largest measles outbreaks since 1996 still occurred in Wuhu city, P R China. A total of 916 cases were reported during 2005-2010. The annual incidence was 6.7 cases per 100,000 population with the peak incidence of 17.6 cases per 100,000 population in 2008. The highest age-specific incidence rate was 222.1 per 100,000 population and occurred in infants aged between 8 and 12 months; the second was 151.9 per 100,000 population in infants aged <8 months. Also, 200 cases occurred in those aged to 22 to 30 years old, accounting for 21.8% of total cases, with the age-specific incidence being 12.8 per 100,000 population. The characteristics related to age distribution have changed in recent measles outbreaks. It underlines the need for vaccination of susceptible young adults and timely administration of the first dose of the measles vaccine.

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