138 documents found, page 1 of 14
Screening wild birds for tick-borne zoonotic pathogens in Portugal
Loureiro, Filipa; Mesquita, João R.; Cardoso, Luis; Santos-Silva, S.; Moreira, G.; Bento, J. T.; Silva, F.; Barradas, P. F.; Matos, M.Wild birds may be involved in the transmission of agents of infectious diseases, including zoonoses, a circumstance which raises a number of public and animal health issues. Migratory bird species play a significant role in the introduction of tick-borne pathogens to new geographic areas, contributing to the dissemination of various etiological agents. This preliminary study aimed to assess the occurrence of fo...
Molecular evidence of sporadic Coxiella burnetii excretion in sheep milk, centr...
Pires, Humberto; Santos-Silva, Sérgio; Cruz, Andreia V.S.; Cardoso, Luís; Lopes, Ana Patrícia; Pereira, Maria; Nóbrega, Carmen; Mega, CristinaCoxiella burnetii is the etiologic agent of Q fever, a worldwide zoonosis. Cattle, sheep and goats are considered the main reservoirs of the disease. Transmission to humans occurs mainly through the inhalation of infectious aerosols from milk, faeces, urine, and birth products from infected ruminants. In this study, a 2-year longitudinal approach was performed to ascertain the excretion of C. burnetii in bulk t...
Serological evidence of antibodies to Flaviviridae in wild birds in Portugal
Loureiro, Filipa; Cardoso, Luís; Matos, Ana Cristina; Pintado, Cristina Santos; Silva, Filipe; Ferreira, Mariana; Brandão, Ricardo; Lopes, CarolinaEmerging infectious diseases are a major threat to biodiversity and an important public health issue. Flaviviruses are the cause of several emerging vector-borne zoonotic arboviruses whose distribution is currently increasing in Europe. The evidence that West Nile virus (WNV) circulates in resident and migratory species has implications for both animal and public health and should therefore be studied in depth....
Molecular evidence of sporadic Coxiella burnetii excretion in sheep milk, centr...
Pires, Humberto; Silva, Sérgio Santos; Cruz, Andreia V.S.; Cardoso, Luís; Lopes, Ana Patrícia; Pereira, Maria A.; Nóbrega, Carmen; Mega, Ana CristinaCoxiella burnetii is the etiologic agent of Q fever, a worldwide zoonosis. Cattle, sheep and goats are considered the main reservoirs of the disease. Transmission to humans occurs mainly through the inhalation of infectious aerosols from milk, faeces, urine, and birth products from infected ruminants. In this study, a 2-year longitudinal approach was performed to ascertain the excretion of C. burnetii in bulk t...
Coxiella burnetii in wild birds from Europe
Loureiro, Filipa; Cardoso, Luís; Matos, Ana Cristina; Matos, Manuela; Coelho, Ana CláudiaCoxiella burnetii is a highly infectious bacterium responsible for causing Q fever, an emerging public health problem of global concern and the cause of severe economic losses in livestock farming. Many species can be asymptomatic carriers and shed this bacterium in various secretions and excreta. Humans can acquire the infection mainly through environmental contamination due to bacterial shedding of infected a...
Seroprevalence of West Nile Virus in birds in European countries
Loureiro, Filipa; Cardoso, Luís; Matos, Ana Cristina; Matos, Manuela; Coelho, Ana CláudiaWest Nile fever is a mosquito-borne viral disease that can affect birds, humans and horses, causing asymptomatic infection, mild fever, meningitis, encephalitis, and death. The aim of this study was to perform a systematic review of West Nile virus (WNV) seroprevalence studies in birds in European countries between 2010 and 2023. Three electronic databases – PubMed, ScienceDirect and Scopus – were searched for ...
Molecular screening of Nocardia spp. in wild mammals: a cross-sectional study
Matos, Manuela; João, Sérgio; Matos, Ana Cristina; Figueira, Luis; Cardoso, Luís; Pinto, Maria de Lurdes; Coelho, Ana CláudiaNocardiosis is an emerging zoonosis caused by Nocardia spp. bacteria. The disease is linked to infections in immunocompromised individuals, and is potentially lethal when it turns systemic and is left untreated. The development of reliable and valid diagnostic methods is crucial to the identification of these pathogenic agents, particularly in wild mammals, which are potential reservoirs. The aim of this study ...
Seroprevalence of West Nile virus antibodies in wild birds of prey in Portugal
Loureiro, Filipa; Cardoso, Luís; Matos, Ana Cristina; Matos, Manuela; Coelho, Ana ClaúdiaWest Nile virus (WNV) is one of the most widely distributed arboviruses in the world with zoonotic potential. Seroepidemiological studies are necessary to establish proper prevention and control strategies.
West Nile virus antibodies in wild birds of prey from the North of Portugal
Loureiro, Filipa; Cardoso, Luís; Matos, Ana Cristina; Matos, Manuela; Coelho, Ana CláudiaWest Nile Virus (WNV) is a mosquito-borne arbovirus spread worldwide, with an enzootic cycle among ornithophilic mosquitoes and birds. Rising temperatures, droughts and water shortage, and the increased movement of people and goods around the world, have facilitated and increased the risk of transmission of this virus in European countries. Seroepidemiological surveys of WNV are useful to understand the real sp...
Mycobacterium avium subsp. paratuberculosis in Wild Boar (Sus scrofa) in Portugal
Matos, Ana Cristina; Figueira, Luis; Martins, Maria Helena; Cardoso, Luís; Matos, Manuela; Pinto, Maria de Lurdes; Coelho, Ana CláudiaParatuberculosis, or Johne’s disease, caused by Mycobacterium avium subsp. paratuberculosis (MAP), is a chronic granulomatous enteritis affecting both domestic and wild ruminants. The agent was also found in wild mammals such as wild boar (Sus scrofa); however, the role of wild mammals in the epidemiology of MAP is unclear. During the research period, 941 free-ranging wild boar (S. scrofa) legally hunted in two...