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Epidemiological characteristics of PRRS outbreaks in 2010 and bio-security implementation in Tien Giang province Update: 9/19/2012 3:28:36 PM (GMT+7)

Nguyen Thi Men, Tran Thi Dan, Nguyen Thi Phuoc Ninh, Le Thanh Hien, Thai Quoc Hieu, Nguyen Van Han - Epidemiological parameters and preventive measures of PRRS in 2010-2011 in three districts of Tien Giang province were investigated and analyzed from 2,267 surveyed questionnaires for disease occurrence, in 348 pig-raising households and 37,907 pigs vaccinated against PRRSV (serotype JXA1-R ) in 354 households.

Epidemiological parameters and preventive measures of PRRS  in 2010-2011 in three districts of Tien Giang province were  investigated and analyzed  from  2,267 surveyed questionnaires  for disease occurrence, in 348 pig-raising households and 37,907 pigs  vaccinated against PRRSV (serotype JXA1-R ) in 354 households.  Pig raising household rate having PRRS infected pigs  reached at peak in the 4th week  since  starting  disease outbreak. Incidence of PRRS  occurring in the highdensity pig raising district (Cho Gao) was faster than in My Tho city and Chau Thanh  district. Households having PRRS infected pigs  were due to  not implementing or incompletely implementing  bio-security measures; of which 28.96 % of households did not apply primarily bio-security measures.
In the first 6 months of 2012, live  vaccine (serotype JXA1-R ) was used to inject pigs inside the outbreak area. After injection only 0.5% of pig numbers  were  infected  with PRRS in the households  who  did not  have disease pigs during the outbreaks,  and 14.9%  of pig numbers were infected with PRRS in the households  having disease pigs during the outbreaks.

Key words:, , Pig,Biosecurity, PRRS, Epidemiological Characteristics,  Tien Giang Province.

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