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Publication A SEROLOGICAL SURVEY ON HEMAGGLUTINATING ENCEPHALOMYELITIS VIRUS INF...  

Update Date: [2013-11-05]

NO.: 22
 
Reportno.

AHRI report No.22

Topic

A SEROLOGICAL SURVEY ON HEMAGGLUTINATING ENCEPHALOMYELITIS VIRUS INFECTION IN TAIWAN

Department

1.Taiwan Animal Health Research Institute
2.unlin Hsien Livestock Disease Control Center

Author Hi. Tsai 1FDi. Lin lFY.S. Lu 11FK.S. Tsai 2FY1. Lee 1FS.T. Huangi
Summary

A total of l4S2sera of sows, more than 12-month-old of age: were collected from 70 farms over 4 geographical regions in Taiwan HemagglutinatingInhibition (HI) test for detection of antibody were carned out on microtitre system by using hemagglutinating encephalomyelitis virus (1EV) as antigen at dose of 4 hemagalutination (HA) units. Result of the tests revealed that sera from 65 out of 70 farms were shown positive reaction against 1EV antigen, the average positive rate was 2S.65%(41611452).

The distribution of the positive reaction revealed that the southern region was the highest (40.75%); and that in easten region was the lowest (14.17%); nothern and middle regions were 27 and 22.4% respectively.

Antibodies against 1EV were proved form sera collected in Taiwan in l99 and every subseqent year. Sera from 1979, 4532% (155342) of sera collected over 6 counties in southern region of Taiwan were antibody kpositive. therefore, it is concluded that 11EV infection may be widespread in Taiwan at least since 1979.

Keyword

hemaglutinating encephalomyelitis virus F hemagglutination FHemagglutinating Inhibition