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Toxoplasma Gondii In Shepherds and Cheesemakers – A Case-Control Study on Sheep...
Moreira, Guilherme; Almeida, Daniela; Cruz, Rita; Nóbrega, Carmen; Arede dos Santos, Carla Sofia; Coelho, Catarina; Mega, Cristina; Pereira, MariaObjectives: The primary objective of this study was to determine if workers occupationally exposed (WOE) to sheep, specifically shepherds and cheesemakers in central Portugal, are more likely to be seropositive for anti-Toxoplasma gondii IgG compared to the general population. Additionally, the study aimed to explore potential differences in seropositivity between shepherds and cheesemakers, while evaluating ag...
Molecular and serological screening support the lack of Coxiella burnetii circu...
Loureiro, Filipa; Mesquita, João R.; Cardoso, Luis; Pintado, Cristina Santos; Gonçalves, S. Gomes; Matos, Ana; Soeiro, V.; Gonçalves, A.; Silva, FilipeCoxiella burnetii is a highly infectious zoonotic pathogenic bacterium that has a major economic impact in the livestock industry throughout the world and causes unpredictable outbreaks in humans worldwide. Although it is known that birds are potential reservoirs of C. burnetii, their role in the epidemiological cycle of the pathogen has not been fully verified. Due to its non-specific symptoms and clinical sig...
Usutu virus in the Iberian peninsula: A systematic review
Loureiro, Filipa; Mesquita, João R.; Cardoso. Luis; Matos, Ana C.; Matos, Ana; Matos, Manuela; Coelho, Ana CláudiaStudies on Usutu virus (USUV) in Europe have been increasing through time, with USUV infection being identified in humans and animals. The emergence of USUV in Europe draws our attention to how an arbovirus is able to spread, adapt, and evolve in a unconventional environment. Understanding the epidemiological and evolutionary processes that contribute to the appearance, maintenance, and further spread of viral ...
Detection of Bagaza virus in Europe: A scoping review
Loureiro, Filipa; Mesquita, João R.; Cardoso, Luis; Matos, Ana; Matos, Manuela; Coelho, Ana CláudiaThe Bagaza virus (BAGV) belongs to the genus Orthoflavivirus (Ntaya serocomplex) and emerged in Europe, Spain, in 2010. The natural transmission cycle of this virus is perpetuated by Culex spp. mosquitoes and viraemic birds. The ability of BAGV to cause infection in several game birds from the family Phasianidae has been well-studied. BAGV is antigenically similar to other orthoflaviviruses from the Japanese en...
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...
Targeted-Amplicon NGS for Blastocystis sp. in Shepherd Dogs of Portugal Discrim...
Gomes-Gonçalves, Sara; Feiteiro, Maria João; Moreira, Guilherme; Cruz, Rita; Esteves, Fernando; Vala Correia, Helena Maria; Mesquita, João R.Research on endoparasites in pet dogs has been growing, but shepherd dogs have largely been overlooked. These dogs frequently share close proximity not only with sheep, which are reservoirs of zoonotic subtypes of Blastocystis, but also with their owners. This close contact increases the potential for shepherd dogs to act as intermediates in the transmission of Blastocystis. To clarify the role of these dogs as...
Molecular Screening of Sarcocystis spp. in Grazing Sheep (Ovis aries) and Sheph...
Gomes-Gonçalves, Sara; Figueiredo, Ricardo J.; Rodrigues, Soraia; Bento, Jaqueline T.; Santos-Silva, Sérgio; Almeida, Daniela; Cruz, RitaSarcocystis spp. are cyst-forming protozoan parasites with a global distribution that infect a wide range of domestic and wild animals, impacting both animal health and livestock productivity. In sheep, infections can cause clinical disease, reproductive losses, and economic damage, articularly when pathogenic species such as Sarcocystis tenella are involved. Grazing sheep, including breeds such as the Serra da...
Cross-Sectional Study on Zoonotic Bacteria Carriage by Small Ruminants from Por...
Pereira, Maria Aires; Baptista, Alexandra Lameira; Cruz, Rita; Esteves, Fernando; Amaro, Ana; Mesquita, João R.; Almeida, Elizabete; Braguez, JoanaZoonotic bacteria, namely Campylobacter spp., Escherichia coli, Salmonella spp. and Staphylococcus aureus, are commonly implicated in human infections and can be transmitted from animals to humans through direct contact, the environment or the food chain. The emergence of antimicrobial resistance in these zoonotic bacteria, namely extended spectrum β-lactamases (ESBLs)-producing strains of E. coli and methicill...
Q fever in Portugal: a one health-oriented literature review
Caldeira, Maria João; Pereira, Tifany; Mesquita, João R.; Rodrigues, Carina; Quintas, HelderQ fever, caused by Coxiella burnetii, is a neglected zoonosis in Portugal, with mandatory notification (1). Transmission to humans occurs mainly by inhalation of contaminated aerosols generated in small-ruminant settings, with shedding peaking around parturition (placenta, bedding, dust) (2 - 4). Evidence from Portugal documents showed animal exposure, peripartum PCR positivity and signals among occupational gr...
Mapping PRNP Polymorphisms in Portuguese Serra da Estrela Ovine Populations: In...
Rodrigues, Soraia; Moreira, Guilherme; Santos-Silva, Sérgio; Gomes-Gonçalves, Sara; Aires Pereira, Maria; Baptista, Alexandra; Cruz, RitaScrapie (classical and atypical) susceptibility in sheep is strongly influenced by PRNP gene polymorphisms. In Portugal, limited data exist for native breeds such as Serra da Estrela, despite their relevance to animal conservation and food production. The full coding region of PRNP gene of 92 Serra da Estrela sheep was sequenced and SNP frequencies were analysed. The predicted functional impact of nonsynonymous...