The focus of this paper is the assessment of the epidemiological risk of the bovine tuberculosis in the Nebrodi’s black pig. One previous study (Di Marco et al., 2007) indicated a prevalence of l 7,74% in the Nebrodi’s black pig resultant from the ingestion of infected tissues scavenged from the carcasses of animal or of milk serum. Few pigs had generalised disease and the predominant expression of the infection were lesions confined to the mandibular or mediastinic lymph nodes, indicative of oral infection. Even though the Nebrodi’s black pigs shared the same environment as cattle, is considered to be of no epidemiological significance in the transmission of infection to cattle based on the lesion distribution in the majority of pigs (Di Marco et al., 2006) and the lack of excretion of M. bovis. The mere presence of infection in a wild animal population is not, of itself, evidence that this species is a wildlife reservoir. Even though infection could be transmitted from pig to pig by cannibalism, it was demonstrate that if the disease of cattle is controlled the infection in pigs disappears. Thei AA. conclude that also the Nebrodi’s black pig is a spillover and end stage host, and so did not represents a source of infection for cattle.
Bovine tubercolosis in the Nebrodi’s black pig: how to assess the risk
CAPUCCHIO, Maria Teresa;
2007-01-01
Abstract
The focus of this paper is the assessment of the epidemiological risk of the bovine tuberculosis in the Nebrodi’s black pig. One previous study (Di Marco et al., 2007) indicated a prevalence of l 7,74% in the Nebrodi’s black pig resultant from the ingestion of infected tissues scavenged from the carcasses of animal or of milk serum. Few pigs had generalised disease and the predominant expression of the infection were lesions confined to the mandibular or mediastinic lymph nodes, indicative of oral infection. Even though the Nebrodi’s black pigs shared the same environment as cattle, is considered to be of no epidemiological significance in the transmission of infection to cattle based on the lesion distribution in the majority of pigs (Di Marco et al., 2006) and the lack of excretion of M. bovis. The mere presence of infection in a wild animal population is not, of itself, evidence that this species is a wildlife reservoir. Even though infection could be transmitted from pig to pig by cannibalism, it was demonstrate that if the disease of cattle is controlled the infection in pigs disappears. Thei AA. conclude that also the Nebrodi’s black pig is a spillover and end stage host, and so did not represents a source of infection for cattle.
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