Volume 23, Number 6—June 2017
Research Letter
Epidemiologic Survey of Japanese Encephalitis Virus Infection, Tibet, China, 2015
Hui Zhang, Mujeeb Ur Rehman, Kun Li, Houqiang Luo, Yanfang Lan, Fazul Nabi, Lihong Zhang, Muhammad Kashif Iqbal, Suolangsi Zhu, Muhammad Tariq Javed, Yangzom Chamba, and Jia Kui Li
Table
Japanese encephalitis virus IgM–positive pigs and humans and Japanese encephalitis virus-positive Culex mosquitoes in Nyingchi District, Tibet, China, 2015*
| Category, variable |
No. IgM positive/no. tested (%) |
Total no. positive/total no. tested (%) |
|
| Male pig or person |
Female pig or person |
||
| Pigs | |||
| County location | |||
| Nyingchi | 3/146 (2.05) | 5/100 (5.00) | 8/246 (3.25) |
| Mainling | 9/105 (8.57) | 6/87 (6.90) | 15/192 (7.81) |
| Gongbo'gyamda | 0/9 | 0/7 | 0/16 |
| Total |
12/260 (4.62) |
11/194 (5.67) |
23/454 (5.07) |
| Humans | |||
| County location | |||
| Nyingchi | 6/66 (9.09) | 11/93 (11.83) | 17/159 (10.69) |
| Mainling | 8/58 (13.79) | 9/65 (13.85) | 17/123 (13.82) |
| Gongbo’gyamda | 1/43 (2.33) | 1/39 (2.56) | 2/82 (2.44) |
| Total | 15/167 (8.98) | 21/197 (10.66) | 36/364 (9.89) |
| Age group, y | |||
| 1–23 | 6/57 (10.53) | 7/54 (12.96) | 13/111 (11.71) |
| 24–45 | 7/54 (12.96) | 11/80 (13.75) | 18/134 (13.43) |
| >45 | 2/56 (3.57) | 3/63 (4.76) | 5/119 (4.20) |
| Total |
15/167 (8.98) |
21/197 (10.66) |
36/364 (9.89) |
| Culex mosquitoes† | |||
| C. tritaeniorhynchus | ND | ND | 7/11 (0.636)‡ |
| C. bitaeniorhynchus | ND | ND | 0/1‡ |
| C. pipiens | ND | ND | 2/69 (0.029)‡ |
*Except as indicated, data are no. (%). ND, Not done.
†Denominator indicates no. in pool.
‡Maximum likelihood estimates (no. pools positive for JEV by reverse transcription PCR).
Page created: May 16, 2017
Page updated: May 16, 2017
Page reviewed: May 16, 2017
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.