This study was performed during May 2000 - 2001 on a total number of 192 camels of 1-7 year’s age. The clinical and laboratory investigations of the ailing camels showed 47 (24.48 %) animals with cleared T.evansi infestation. Out of them 26 camels manifesting concomitant infections namely salmonellosis (8/26) 30.77%, mange 12/26 (46.15%) and both infections 6/26 (23.08%). The immunosuppressive action of T. evansi infection due to alteration in immunological parameters could be incriminated in the concurrent infections.
The prominent clinical signs exhibited on ailing camels were described and discussed. Epidemiological study declared that, the highest prevalence rate of T. evansi infection among camels was during summer seasons and the lowest rate was during winter. Hemogram revealed anemia and serum biochemical panels showed alteration in the values of total protein, albumin, globulin, sodium, potassium, chloride, glucose and microelements (Zinc, selenium, copper and iron).
Bacteriological examination revealed detection of salmonella species and the predominant strain was S.typhimurum (42.86%) while microscopic examination of skin scrapings revealed sarcoptic mite infestation.
Therapeutic schedules for T.evansi infected camels was applied, also camels manifesting concomitant infections were simultaneously treated with the specific and supportive therapy and the obtained results were discussed and the possible control measures were suggested.
It can be concluded that T. evansi infection have suppressive action resulting in emergence of salmonellosis and mange as concomitant infections. So early detection and treatment of T. evansi infection of camels recommended avoiding flaring up and the onset of possible concomitant infections.