5 documents found, page 1 of 1
Evidence for sporadic Coxiella burnetii excretion in sheep milk, central Portugal
Pires, Humberto; Silva, S. Santos; Cruz, A.; Cardoso, Luís; Lopes, A.P.; Pereira, M.A.; Nóbrega, C.; Mega, A.C.; Santos, C.; Cruz, R.; Esteves, F.Coxiella burnetii, the causative agent of Q fever, is a globally distributed zoonosis, with cattle, sheep, and goats considered the main reservoirs of the disease (Agger et al,., 2013; Bento et al., 2023). Human transmission primarily occurs through inhaling infections aerosols from milk, faeces, urina, and birth products from infected ruminants. This study used a 2-year longitudinal approach to investigate C. ...
Serological Evidence of Rickettsia Exposure among Patients with Unknown Fever O...
Barradas, P.F.; Neto, Z.; Mateus, T.L.; Teodoro, A. C.; Duarte, L.; Gonçalves, H.; Ferreira, P.; Gärtner, F.; Sousa, R.; Amorim, I.Spotted fever group Rickettsia (SFGR) is one among the aetiologies that cause fever of unknown origin in Angola. Despite their occurrence, there is little information about its magnitude in this country either because it is misdiagnosed or due to the lack of diagnostic resources. For this purpose, eighty-seven selected malaria- and yellow fever-negative serum specimens collected between February 2016 and March ...
Pathogenic Rickettsia in ticks of spur-thighed tortoise (Testudo Graeca) sold i...
Barradas, P.F.; Mesquita, J.R.; Lima, C.; Cardoso, L.; Alho, A.M.; Ferreira, P.; Amorim, I.; De Sousa, R.; Gärtner, F.The dissemination of vector arthropods harbouring zoonotic pathogens through the uncontrolled transboundary trade of exotic and pet animals poses an important threat to Public Health. In the present report, we describe the introduction of pathogenic Rickettsia africae and R. aeschlimanni in ticks removed from imported tortoises in Qatar. A total of 21 ticks were collected from pet spur‐thighed tortoises (Testud...
Serological and molecular evidence of Bartonella henselae in cats from Luanda c...
Barradas, P.F.; De Sousa, R.; Vilhena, H.; Oliveira, A.C.; Luz, M.F.; Granada, S.; Cardoso, L.; Lopes, A.P.; Gonçalves, H.; Mesquita, J.R.; Ferreira, P.A total of 100 domestic cats from Luanda (Angola) were tested for the presence of antibodies against Bartonella henselae and spotted fever group of Rickettsia (SFGR) using indirect immunofluorescence assay (IFA). Molecular screening targeting the riboflavin synthase (ribC) gene for Bartonella and outer membrane protein B (ompB) gene for Rickettsia, using conventional PCR and sequencing was also performed in cat...
Seroprevalence of spotted fever group rickettsiae among a group of pet dogs fro...
Barradas, P.F.; Sousa, R.; Amorim, I.; Vilhena, H.; Gartner, F.; Cardoso, L.; Oliveira, A.; Granada, S.; Silva, P.Tick-transmitted spotted fever group Rickettsiae (SFGR) are considered emerging disease. This study aims to assess the seroprevalence of spotted fever group rickettsiae among a group of pet dogs from Luanda, Angola.