<i>Salmonella enterica</i> and <i>Theileria</i> co-infection in dromedary camels (<i>Camelus dromedarius</i>) in UAE

Abstract

Background: Despite a steady increase in camel husbandry worldwide, pathology of camel diseases is still relatively under-investigated. Clinical hematuria is generally indicative of either acute or chronic urogenital inflammations, traumatic calculous injuries, cancers, corrosive poisonings. Infectious agents are not typically implicated in urinary tract infection of camels. Aim: This study aims to explore possible causes in camels clinically suffered from acute febrile disease with severe hematuria. Methods: To achieve aims of the study culturing of urine samples, microscopic examination for detection of blood parasites, phenotypic and genotypic characterization for the identification of isolated bacteria were followed. Results: Conventional bacteriology enabled identification of Salmonella enterica subsp. enterica serovar typhimurium which further genotyped by 16S rRNA gene sequencing. Microscopic examination of Giemsa stained blood smears from both infected dromedary camels revealed the presence of pleomorphic Theileria piroplasms. The results suggest that the clinical symptoms were as coinfection induced by salmonellosis and theileriosis. Conclusion: Given these remarkable findings, further research should aim to better characterize the opportunistic pathogens associated with camel theileriosis, as well as to determine other possible infectious agents of the camel urinary tract.

Evaluation of antibiotic resistance in salmonella isolated from camel in a Najaf province

“…In TSI all isolates appear alkaline/ acid, black respectively with gas formation, yellow color resulting from fermentation glucose, black color result as formation of H2S from iron of media and gas formation come from sucrose fermentation (Abdelwahab et al, 2019) (Lamas et al, 2018).…”

Molecular Investigation on Tick-Borne Hemoparasites and Coxiella burnetii in Dromedary Camels (Camelusdromedarius) in Al Dhafra Region of Abu Dhabi, UAE

“…Sequence analysis confirmed 100% identity to T. annulata isolates from cattle [ 11 ]. Abdelwahab and colleagues [ 14 ] reported coinfection of salmonellosis and theileriosis in camels in UAE that clinically suffered from acute febrile disease with severe hematuria.…”

“…in camels [ 11 , 12 , 13 ]. Incidence of clinical theileriosis in dromedary camels have been reported in the United Arab Emirates [ 14 ]. T. annulata antigen was detected in Hyalomma dromedarii ticks in the Eastern region of Abu Dhabi [ 15 ].…”

Characterization of Salmonella Frintrop isolated from dromedary camels ( Camelus dromedarius )

“…As in this study, salmonellosis in dromedaries is generally asymptomatic, although clinical Salmonella infections have been reported with symptoms that included epiphora, anorexia, muscle twitching and lateral recumbency (Nour‐Mohammadzadeh et al., 2010). In addition, controlling Salmonella infections in camels should be taken into account, as it has been shown that Salmonella could be the cause of co‐infections such as clostridia or theileriosis diseases (Abdelwahab et al., 2019). Regarding Salmonella serovars isolated, ser.…”