This study shows a representative stratified cluster samples survey of the prevalence of comparative intradermal tuberculin test in cattle from two rural regions in Kalyobia province in project which held by Benha University from 1 to 26 March 2009 (National Project for Tuberculosis Protection) to assess possible risk factors for tuberculin-positive reaction in cattle. Two villages located in North Benha city the capital of Kalyobia province , (Kafr saad- Meet rady) in where 200 cattle were randomly selected, and tested. In addition, 200 of these cattle owners were tested and interviewed for risk factor assessment. Hundred percent of the tested cattle in this study were traditional species (native). The individual overall highest prevalence of cattle bovine tuberculosis (BTB) was 3 cases (1.5 %), in Kafr saad, and the lowest in Meet rady 1 cases (0.5 %).
A total of 6 cases tuberculosis complex identified as M.bovis, 4 of them were isolated from cattle and two isolates were obtained from human in the same locality of those cattle. M.bovis were isolated from two (12.5 %) of 16 animals in group A {(Tuberculin +ve with signs of tuberculosis (having clinical signs such as debilitated condition, cough, decreasing milk production, etc)}, two (6 %) of 33 animals in group B (Tuberculin +ve and apparently healthy), (0%) of 87animals in group C (Tuberculin -ve with clinical signs of tuberculosis), (0%) of 64 animals in group D (Tuberculin -ve and apparently healthy animal). There was no positive M.bovis samples isolated from cattle blood, or pharyngeal swabs, (total n =200 each), while positive isolates from milk samples were (1.5 %), (n=200), but from fecal samples were (0.5 %), (n=200). As well as two positive cases from 200 human samples were obtained only from pharyngeal swabs.
The assessed potential risk factors of disease transmission between cattle and human (food consumption, livestock husbandry and presence of positive cattle) were statistically significant.
|
