TAILIEUCHUNG - Báo cáo khoa học: "Incidence of Reinfections with Mycoplasma hyopneumoniae and Actinobacillus pleuropneumoniae in Pig Farms Located in Respiratory-Disease-Free Regions of Switzerland – Identification and Quantification of Risk Factors"

Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành thú y đề tài: Incidence of Reinfections with Mycoplasma hyopneumoniae and Actinobacillus pleuropneumoniae in Pig Farms Located in Respiratory-Disease-Free Regions of Switzerland – Identification and Quantification of Risk Factors. | Acta vet. scand. 2002 43 145-156. Incidence of Reinfections with Mycoplasma hyopneumoniae and Actinobacillus pleuropneumoniae in Pig Farms Located in Respiratory-Disease-Free Regions of Switzerland - Identification and Quantification of Risk Factors By R. Hege1 WZimmermann2 R. Scheidegger3 . Stark1 1Swiss Federal Veterinary Office 2Department of Clinical Veterinary Sciences Veterinary Faculty University of Berne and 3Swiss Pig Health Service Bern Switzerland. Hege R Zimmermann W Scheidegger R Stark KDC Incidence of reinfections with Mycoplasma hyopneumoniae and Actinobacillus pleuropneumoniae in pig farms located in respiratory-disease-free regions of Switzerland. Acta vet. scand. 2002 43 145-156. - The objective of the study was to identify risk factors for reintroduction of Actinobacillus pleuopneumoniae and Mycoplasma hyopneumoniae enzootic pneumonia onto pig farms in areas in Switzerland that were involved in an eradication programme from 1996 to 1999 and to assess the role of dealers in relation to these reinfections. The study was based on the comparison of pig farms that were reinfected in the year 2000 cases and pig farms that remained uninfected in the same area controls . Additionally data were collected from Swiss pig dealers and transport companies. Out of a total of 3983 farms 107 farms were reinfected in the year 2000. The incidences were for Actinobacilluspleuopneumoniae and for Mycoplasma hyopneumo-niae enzootic pneumonia . Compared to reinfection rates prior to the eradication programme this is a considerable reduction. Statistically significant risk factors for the reinfection were finishing farm large mixed breeding-finishing farm reinfected neighbour and parking site for pig transport vehicles close to the farm . Pig farmers that purchased pigs from only one supplier per batch had a lower risk of reintroducing infection protective factor . As long as infected and uninfected regions co-exist in Switzerland direct and indirect .

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