Genetic characterization of wild-type measles viruses isolated in China, 2006-2007.
Molecular characterization of wild-type measles viruses in China during 1995-2004 demonstrated that genotype H1 was endemic and widely distributed throughout the country. H1-associated cases and outbreaks caused a resurgence of measles beginning in 2005. A total of 210,094 measles cases and 101 deaths were reported by National Notifiable Diseases Reporting System (NNDRS) and Chinese Measles Laboratory Network (LabNet) from 2006 to 2007, and the incidences of measles were 6.8/100,000 population and 7.2/100,000 population in 2006 and 2007, respectively. Five hundred and sixty-five wild-type measles viruses were isolated from 24 of 31 provinces in mainland China during 2006 and 2007, and all of the wild type virus isolates belonged to cluster 1 of genotype H1. These results indicated that H1-cluster 1 viruses were the predominant viruses circulating in China from 2006 to 2007. This study contributes to previous efforts to generate critical baseline data about circulating wild-type measles viruses in China that will allow molecular epidemiologic studies to help measure the progress made toward China's goal of measles elimination by 2012.
Ji
Yixin
Y
WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing, China.
Xu
Songtao
S
Zhang
Yan
Y
Zhu
Zhen
Z
Mao
Naiying
N
Jiang
Xiaohong
X
Ma
Chao
C
Lu
Peishan
P
Wang
Changyin
C
Liang
Yong
Y
Zheng
Huanying
H
Liu
Yang
Y
Dai
Defang
D
Zheng
Lei
L
Zhou
Jianhui
J
Wang
Shuang
S
Zhang
Zhenying
Z
Wu
Shengwei
S
Nan
Lijuan
L
Li
Li
L
Liang
Xiaofeng
X
Featherstone
David Alexander
DA
Rota
Paul A
PA
Bellini
William J
WJ
Xu
Wenbo
W
D002681:China / Q000453:epidemiology; D005838:Genotype; D008457:Measles / Q000453:epidemiology / Q000821:virology*; D008459:Measles virus / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D008969:Molecular Sequence Data; D010802:Phylogeny