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SARS-CoV-2 and blood donations in Portugal, June-July 2020

Mesquita, JR; Barradas, P; Gomes da Silva, P; Ferreira, AS; Silva, E; Matas, IM; Thomson, G; Amorim, I; Duarte, R; Gomes, HC; Monteiro, Á

Letter to the editor


Genetic diversity of pathogenic leptospires from wild, domestic and captive hos...

Ferreira, AS; Ahmed, A; Rocha, T; Vieira, ML; Paiva-Cardoso, MDN; Mesquita, JR; van der Linden, H; Goris, M; Thompson, G; Hartskeerl, RA; Inácio, J

Leptospirosis is a neglected zoonotic disease of worldwide distribution with a significant veterinary and public health impact. It is caused by pathogenic bacteria of the genus Leptospira. The availability of effective tools to accurately identify and type leptospires is of utmost importance for the diagnosis of the disease and for assessing its epidemiology. Several multi-locus sequence typing (MLST) approache...


Occupationally Acquired Q Fever in Shepherds and Sheep Milk Cheesemakers

Cruz, R; Santos, C; Esteves, F; Ferreira, AS; Vasconcelos-Nóbrega, C; Mega, C; Albuquerque, C; Teixeira-de-Lemos, E; Coelho, AC; Vala, H; Mesquita, JR

Q fever is a zoonosis caused by Coxiella burnetii, and transmission to humans is often associated with contact with ovine and caprine livestock. Those exposed to sheep are particularly at high risk of infection. Recent studies show that Q fever is increasing in sheep farms in Portugal raising alerts on spillover to humans. We detected anti-C. burnetii IgG in shepherds and sheep milk cheesemakers (27 [28.1%] in ...


Short communication: detection and molecular characterization of hepatitis E vi...

Mesquita, JR; Istrate, C; Santos-Ferreira, NL; Ferreira, AS; Abreu-Silva, J; Veiga, J; van der Poel, WHM; Nascimento, MSJ

As in most of the African continent, the status of hepatitis E virus (HEV) infection in domestic animals in São Tomé and Príncipe, an archipelago off the western equatorial coast of Central Africa, is also completely unknown. In the present study, we investigated the presence of HEV among domestic animals in São Tomé and Príncipe. A total of 93 stool samples from different animal species (goat, cow, pig, chicke...


Bulk-Tank Milk Longitudinal Serosurvey Reveals Decreasing Schmallenberg Virus C...

Esteves, F; Cruz, R; Vasconcelos-Nóbrega, C; Santos, C; Ferreira, AS; Petrovic, T; Cardoso, L; Coelho, AC; Vala, H; Nascimento, MSJ; Mesquita, JR

Introduction: In 2011, Schmallenberg virus (SBV) was first detected in dairy cattle herds in The Netherlands and Germany having since then spread across Europe. Today studies are starting to show a decrease in new SBV infections, a circumstance that raises alerts for possible re-emergence if ideal conditions for vector development occur. To assess the potential decrease in SBV circulation, we performed a 2-year...


Outbreaks of abortions by Coxiella burnetii in small ruminant flocks and a long...

Cruz, R; Esteves, F; Vasconcelos-Nobrega, C; Santos, C; Ferreira, AS; Mega, C; Coelho, AC; Vala, H; Mesquita, JR

Q fever is a worldwide zoonotic infectious disease caused by Coxiella burnetii and sheep and goats are known to be the main reservoir for human infection. This study describes the epidemiological and laboratory findings of C.burnetii outbreaks affecting sheep and goat flocks and also provides the results of a prospective serosurvey in bulk tank milk samples to assess C.burnetii circulation in a population of sh...


Prospective Serosurvey of Coxiella burnetii Antibodies in Selected Sheep of Por...

Cruz, R; Esteves, F; Vasconcelos-Nóbrega, C; Santos, C; Ferreira, AS; Mega, AC; Coelho, AC; Vala, H; Mesquita, JR

Q fever is a zoonotic disease caused by Coxiella burnetii that is highly prevalent across the world. In this study, a prospective serosurvey was performed to study C. burnetii circulation in a population of sheep in the central region of Portugal. Blood from a representative sample of 168 animals was drawn in both 2015 and 2016, and sera were tested for IgG anti-C. burnetii by EIA. In 2015, 7.7% (13/168) animal...


Serologic evidence for Schmallenberg virus circulation at high altitude, Centra...

Esteves, F; Cruz, R; Vasconcelos-Nobrega, C; Santos, C; Ferreira, AS; Petrovic, T; Cardoso, L; Coelho, AC; Vala, H; Nascimento, MSJ; Mesquita, JR

A few years after the initial 2011 large scale Schmallenberg virus (SBV) epidemic that affected Europe, a subsequent decrease in new SBV infections was observed presumably associated with natural substitution of previously exposed animals. In the present work, a 2-year prospective serosurvey was performed to evaluate SBV circulation in a population of sheep living at high altitude in the central region of Portu...


A Nationwide Seroepidemiologic Study on Q Fever Antibodies in Sheep of Portugal

Cruz, R; Esteves, F; Vasconcelos-Nbrega, C; Santos, C; Ferreira, AS; Mega, C; Coelho, AC; Vala, H; Mesquita, JR

Introduction: Q fever is an almost global zoonotic disease caused by Coxiella burnetii. Human infections can produce acute and chronic disease that can lead to abortions and stillbirths in pregnant women, usually infected by the inhalation of C. burnetii-contaminated aerosols or through consumption of contaminated products. Sheep are one of the primary animal reservoirs with disease being associated with vast s...


Avaliação do Conhecimento, Adesão Terapêutica e Repercussão de uma Sessão Educa...

Amaral, A; Leitão, P; Pinto, L; Ferreira, AS; Silva, JP; Silva, J; Reina, M


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