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Your search keyword '"Khethiwe Mtshali"' showing total 3 results
Start Over Author "Khethiwe Mtshali" Topic ehrlichia canis
3 results on '"Khethiwe Mtshali"'

1. Detection of Ticks and Tick-Borne Pathogens of Urban Stray Dogs in South Africa

Author

Clara-Lee van Wyk, Khethiwe Mtshali, Moeti O. Taioe, Stallone Terera, Deon Bakkes, Tsepo Ramatla, Xuenan Xuan, and Oriel Thekisoe

Subjects
Anaplasma phagocytophilum, Babesia spp., Coxiella spp., Rickettsia spp., Ehrlichia canis, Haemaphysalis elliptica, Medicine
Abstract

This study aimed to identify ticks infesting dogs admitted to the Potchefstroom Animal Welfare Society (PAWS) and to detect tick-borne pathogens they are harbouring. A total of 592 ticks were collected from 61 stray dogs admitted to PAWS originating from several suburbs in and near Potchefstroom, South Africa. The dog ticks were identified as Haemaphysalis elliptica (39%) and Rhipicephalus sanguineus (61%) by both morphological and DNA analyses. Of these ticks, H. elliptica consisted of 67.5% (156/231) and 32.5% (75/231) female and male ticks, respectively, whilst R. sanguineus consisted of 48.5% (175/361) and 51.5% (186/361) female and male ticks, respectively. Microscopic examination of blood smears from engorged female ticks indicated overall occurrences of 0.5% (1/204) for Babesia spp. from R. sanguineus, 1% (2/204) of Anaplasma spp. from H. elliptica, and 22% (45/204) of Rickettsia spp. from both H. elliptica and R. sanguineus. Using pooled samples molecular detection of tick-borne pathogens indicated overall occurrences of 1% (1/104) for A. phagocytophilum in H. elliptica, 9.6% (10/104) of Rickettsia spp. in H. elliptica and R. sanguineus, 5.8% (6/104) of Ehrlichia canis in H. elliptica and R. sanguineus, and 13.5% (14/104) of Coxiella spp. in both H. elliptica and R. sanguineus. Additionally, PCR detected 6.5% (2/31) of Coxiella spp. DNA from H. elliptica eggs. Our data indicate that urban stray dogs admitted at PAWS are infested by H. elliptica and R. sanguineus ticks which are harbouring several pathogenic organisms known to cause tick-borne diseases.

Published
2022
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2. Occurrence of Coxiella burnetii, Ehrlichia canis, Rickettsia species and Anaplasma phagocytophilum-like bacterium in ticks collected from dogs and cats in South Africa

Author

Khethiwe Mtshali, Chihiro Sugimoto, Ryo Nakao, and Oriel M. M. Thekisoe

Subjects
0301 basic medicine, General Veterinary, biology, Ehrlichia canis, Ehrlichia, animal diseases, Rhipicephalus sanguineus, 030106 microbiology, 030231 tropical medicine, Amblyomma, General Medicine, bacterial infections and mycoses, biology.organism_classification, Coxiella burnetii, Virology, Anaplasma phagocytophilum, 03 medical and health sciences, 0302 clinical medicine, parasitic diseases, bacteria, Anaplasma, Borrelia burgdorferi
Abstract

Ticks are major vectors of arthropod-borne infections and transmit a wide variety of zoonotic pathogens. This study was conducted mainly to determine the occurrence of canine tick-borne bacterial and rickettsial pathogens especially those with zoonotic potential. We examined 276 Rhipicephalus sanguineus , 38 Haemaphysalis elliptica and 4 Amblyomma hebraeum ticks from 90 dogs and 4 cats from the Free State, KwaZulu-Natal, North West and Mpumalanga provinces. DNA of Coxiella burnetii (41%), Ehrlichia or Anaplasma (18%), Rickettsia spp. (37%), Anaplasma phagocytophilum -like bacterium (18%) and Ehrlichia canis (19%) was detected by polymerase chain reaction (PCR) from a total of 147 pooled DNA samples. All samples were negative for the presence of Borrelia burgdorferi DNA. Ehrlichia canis was detected in samples from all the provinces except the North West; A. phagocytophilum was absent in KwaZulu-Natal samples, whereas Rickettsia species and C. burnetii were detected in all sampled provinces. The PCRpositive samples were confirmed by direct sequencing of the product. Data from this study calls for a joint effort by both veterinary and medical sectors to conduct epidemiological studies of the zoonotic pathogens in both animals and humans.

Published
2017

3. Occurrence ofiCoxiella burnetii/i,iEhrlichia canis/i,iRickettsia/ispecies andiAnaplasma phagocytophilum/i-like bacterium in ticks collected from dogs and cats in South Africa

Author

Khethiwe, Mtshali, Ryo, Nakao, Chihiro, Sugimoto, and Oriel, Thekisoe

Subjects
South Africa, Dogs, Ticks, Coxiella burnetii, Tick-Borne Diseases, Cats, Ehrlichia canis, Animals, Humans, Dog Diseases, Rickettsia, Cat Diseases, Anaplasma phagocytophilum
Abstract

Ticks are major vectors of arthropod-borne infections and transmit a wide variety of zoonotic pathogens. This study was conducted mainly to determine the occurrence of canine tick-borne bacterial and rickettsial pathogens especially those with zoonotic potential. We examined 276 Rhipicephalus sanguineus, 38 Haemaphysalis elliptica and 4 Amblyomma hebraeum ticks from 90 dogs and 4 cats from the Free State, KwaZulu-Natal, North West and Mpumalanga provinces. DNA of Coxiella burnetii (41%), Ehrlichia or Anaplasma (18%), Rickettsia spp. (37%), Anaplasma phagocytophilum-like bacterium (18%) and Ehrlichia canis (19%) was detected by polymerase chain reaction (PCR) from a total of 147 pooled DNA samples. All samples were negative for the presence of Borrelia burgdorferi DNA. Ehrlichia canis was detected in samples from all the provinces except the North West; A. phagocytophilum was absent in KwaZulu-Natal samples, whereas Rickettsia species and C. burnetii were detected in all sampled provinces. The PCRpositive samples were confirmed by direct sequencing of the product. Data from this study calls for a joint effort by both veterinary and medical sectors to conduct epidemiological studies of the zoonotic pathogens in both animals and humans.

Published
2016

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