| Summary: | 碩士 === 國立臺灣大學 === 獸醫學系研究所 === 85 === The serological survey was undertaken to realize the leptospiral infectio
n status of pigs and military guard dogs in Taiwan area. Six hundred and fifty
-nine pig serum samples were collected from 6 farrow-finish operations of 5 co
unties in Taiwan between December 1996 and February 1997. And 88 breeder and 3
9 re-training dog serum samples were collected from Ho-Li Military Guard Dog C
enter in August 1996. Serum samples were tested by Microscopic Agglutination T
est, using Leptospira interrogans serovar bratislava, canicola, grippotyphosa,
icterohaemorrhagiae, kennewicki, autumnalis, Leptospira borgpetersenii serova
r balcanica and Leptospira santarosai serovar shermani as antigens. Antibody t
iters ≧50x were considered positive. Four hundred and ninety-nine pigs had an
tibodies against at least one of the 8 serovars, titers were from 50x to 25,60
0x, and the general prevalence is 76%. As to the infected serovars, seropreval
ence is highest in serovar shermani, 74% pigs were infected by the serovar, an
dseroprevalence of serovar grippotyphosa is 0%. Seroprevalences of breeder dog
s to serovar canicola and icterohaemorrhagiae are 56% and 74%, geometric mean
titers are 125x and 128x respectively. Seroprevalences of re-training dogs to
the two vaccinal serovars are 36% and 59%, geometric mean titers are 105x and
113x respectively. Ninety-one percent and 79% of breeder and re-training dogs
are seropositive to at least one of the six non-vaccinal serovars, the predomi
nant serovar is shermani, 90% and 75% breeder and re-training dogs have been i
nfected by the serovar. According to the results, leptospirosis is prevalent
both in swine herds and military guard dogs in Taiwan, and the predominant ser
ovar is shermani. Since Leptospirosis is an important zoonosis, the occupation
al risks of piggery workers and dog breeder soldiers should no longer be disre
garded.
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