Travel medicine and infectious disease · 2018
Detection of zoonotic agents and a new Rickettsia strain in ticks from donkeys from South Africa: Implications for travel medicine.
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Halajian Ali, Palomar Ana M, Portillo Aránzazu, Heyne Heloise, Romero Lourdes, Oteo José A
Аннотация
BACKGROUND: In rural South Africa, people are in close contact with tick-infested donkeys. This study aimed to investigate the presence of spotted fever group Rickettsia, Anaplasma, Ehrlichia and Coxiella species in these arthropods.
METHOD: 376 ticks (7 species) from donkeys from Limpopo Province (South Africa) were pooled and analyzed using PCR assays for the bacterium detection.
RESULTS: Rickettsia africae was amplified in 6 Amblyomma hebraeum, 1 Rhipicephalus appendiculatus and 5 Rhipicephalus evertsi evertsi pools. Rickettsia aeschlimannii was found in 1 Hyalomma rufipes, 1 Rh. appendiculatus and 2 Rh. e. evertsi pools. Three Rhipicephalus simus specimens were infected with a new Rickettsia strain that showed low identity with any validated Rickettsia species. Ehrlichia canis was detected in 2 Rh. e. evertsi pools and in one of them Anaplasma bovis was amplified. An Am. hebraeum pool showed infection with Anaplasma ovis and another with Coxiella burnetii.
CONCLUSION: South African donkeys are involved in the epidemiology of tick-borne pathogens and other associated agents such as C. burnetii with Health importance. A potential new Rickettsia species, with unknown pathogenic potential, has been detected in the anthropophilic Rh. simus.
METHOD: 376 ticks (7 species) from donkeys from Limpopo Province (South Africa) were pooled and analyzed using PCR assays for the bacterium detection.
RESULTS: Rickettsia africae was amplified in 6 Amblyomma hebraeum, 1 Rhipicephalus appendiculatus and 5 Rhipicephalus evertsi evertsi pools. Rickettsia aeschlimannii was found in 1 Hyalomma rufipes, 1 Rh. appendiculatus and 2 Rh. e. evertsi pools. Three Rhipicephalus simus specimens were infected with a new Rickettsia strain that showed low identity with any validated Rickettsia species. Ehrlichia canis was detected in 2 Rh. e. evertsi pools and in one of them Anaplasma bovis was amplified. An Am. hebraeum pool showed infection with Anaplasma ovis and another with Coxiella burnetii.
CONCLUSION: South African donkeys are involved in the epidemiology of tick-borne pathogens and other associated agents such as C. burnetii with Health importance. A potential new Rickettsia species, with unknown pathogenic potential, has been detected in the anthropophilic Rh. simus.