1. 1. Perry, RT, Halsey NA. The clinical significance of measles: a review. J Infect Dis. 2004;189 Suppl 1:S4-16.
2. 2. World Health Organization (WHO). Monitoring progress towards measles elimination. Wkly Epidemiol Rec. 2010;85:490-4.
3. 3. WHO. Measles virus nomenclature update: 2012. Wkly Epidemiol Rec. 2012;87:73-80.
4. 4. WHO. Manual for the laboratory diagnosis of measles and rubella virus infection. WHO/IVB/07.01. Geneva, Switzerland: WHO; 2007.
5. 5. Sunagawa T, Shimada T, Ueno-Yamamoto K, et al. Progress toward measles elimination --- Japan, 1999–2008. MMWR Morb Mortal Wkly Rep. 2008;57:1049-52.