Prevalência de anticorpos contra o vírus da língua azul em ovinos do Distrito Federal / Prevalence of bluetongue virus antibodies in sheep from Distrito Federal, Brazil

O objetivo deste trabalho foi estimar a prevalência de anticorpos contra o vírus da língua azul (BTV) em rebanhos ovinos do Distrito Federal. Soros de 606 ovinos, pertencentes a 18 propriedades, foram analisados pela técnica de imunodifusão em ágar gel (AGID), para pesquisa de anticorpos contra o BTV. As prevalências de rebanhos e de animais infectados pelo vírus da língua azul no Distrito Federal foram respectivamente de 100% (IC 95%: 84,67% a 100%) e de 52,37% (389/606) (IC 95%: 35,76% a 68,98%). Assim, o presente estudo permite concluir que o vírus da língua azul está amplamente disseminada no rebanho ovino do Distrito Federal.

The aims of the present study were to determine the prevalence of bluetongue virus antibodies in sheep from Distrito Federal. Sera from 606 sheep of 18 herds were submitted to the agar-gel immunodiffusion for bluetongue virus antibodies. The prevalences of bluetongue infection found in Distrito Federal were 100% (CI 95%: 84.67 to 100.00) for flocks and 52.37% (389/606) (CI 95%: 35.76 to 68.98) for animals. Thus, data from the present study showed that infection by bluetongue virus is highly widespread in sheep flocks in the Distrito Federal, which intensifies the need for assessments on the impact of this disease in Brazil.

Anticorpos anti-Brucella abortus em equídeos errantes do município de Mossoró, Rio Grande do Norte / Anti-Brucella abortus antibodies in free-ranging equids from Mossoró, Rio Grande do Norte, Brazil

Os objetivos deste trabalho foram (i) determinar a ocorrência da infecção por Brucella abortus em equídeos de vida livre no município de Mossoró, Rio Grande do Norte e (ii) avaliar possíveis fatores associados a esta infecção. Soros de 227 equídeos (178 asininos, 43 equinos e 6 muares), capturados pela polícia rodoviária e funcionários da prefeitura, foram coletados por punção venosa. A pesquisa de anticorpos anti-Brucella abortus foi realizada empregando-se, como triagem, o teste do antígeno acidificado tamponado (AAT) e como confirmatório o teste de redução pelo 2-Mercaptoetanol (2ME). Dos animais testados, quatro (1,76%) foram positivos para anticorpos anti- B. abortus. Todos os positivos eram equinos (9,30%, 4/43). A análise das variáveis levantadas (sexo e idade) como possíveis fatores associados à infecção por B. abortus não revelou a existência de associação entre estas e a soropositividade. Assim, o presente estudo permite concluir que a infecção por B. abortus está presente em equinos do município de Mossoró, Rio Grande do Norte.

The aims of the present study were (i) to determine the occurrence and (ii) to evaluate possible factors associated with infection by Brucella abortus in free-ranging equids from Mossoró, Rio Grande do Norte, Brazil. Sera from 227 free-ranging equids (178 donkeys, 43 horses and 6 mules), captured by the highway police and the prefecture agents, were screened by the rose bengal test (RBT) and confirmed for B. abortus-antibodies by the standard tube agglutination (STAT) and the 2-mercaptoethanol (2ME) tests. Of the 227 equids tested, four (1.76%) were positive for B. abortus antibodies. All were horses, which resulted in an observed frequency of infection for this species of 9.30% (4/43). No association was found among seropositivity for B. abortus and the age and sex. Thus, data from the present study showed that infection by B. abortus is present among horses in Mossoró, Rio Grande do Norte, Brazil.

Fatores de risco e presença de anticorpos contra Brucella canis e amostras lisas de Brucella em cães do município de Araguaína, Tocantins, Brasil / Risk factors and presence of antibodies to Brucella canis and smooth Brucella in dogs from the municipality of Araguaína, Tocantins, Brazil

The aim of this survey was to verify the occurrence of anti-Leptospira spp. antibodies in captive animals in the Parque Zoobotânico Arruda Câmara, João Pessoa, Paraíba State, Northeastern Brazil. Blood samples were collected from 49 animals: 26 mammals of the species Sapajus libidinosus, Cebus flavius, Saimiri sciureu, Coendu sp., Pseudalopex vetulus, Leopardus pardalis, Leopardus tigrinus, Galactitis vitata, Eira barbara, Nasua nasua, Tayassu tajacu and Ratus norvegicus; 10 birds of the species Penelope jacucaca, Pavo cristatus, Anodorhynchus hyacinthinus, Ara chlorothpterus, Pionites leucogaster, Polyborus plancus, Geranoaetus melanoleucus and Urubitinga urubitinga; and 13 reptiles of the species Caiman latirostris, Paleosuchus trigonatus, Caiman crocodilus, Tupinabis merinae, Tupinambis teguixin, Boa constrictor, Corallus hortulanus, Python molurus, Bufocephala vanderhaegei, Geochelone denticulata and Geochelone carboraria. Sera were examined by the microscopic agglutination teste (MAT) using 24 serovars as antigens and cut-off point of 1:100. One ocelot (Leopardo pardalis) presented positive reaction for the Icterohaemorrhagiae serovar with titer of 100, however, it did not show any clinical sign of the infection. Sinantropic rodents are the main reservoirs of this serovar, which suggests the need of maintenance and continuous evaluation of rodent control programs.

Canine brucellosis is an infectious disease of worldwide distribution that can affect dogs, wild canids and man. It is caused by Brucella canis, but dogs can also be infected by smooth Brucella such as B. abortus and B. suis. Due to the increasing importance of dogs in our society, to the scarcity of information about canine brucellosis in the country and its zoonotic character, the aims of the present study were (i) to conduct a survey on the infection by B. canis and smooth Brucella in dogs from the municipality of Araguaína, Tocantins, Brazil, and (ii) to evaluate the risk factors associated with these infections. Sera from 241 dogs were analyzed by agar gel immunodiffusion (AGID) to detect B. canisantibodies, and Buffered Acidified Plate Antigen test (BAPA) and fluorescence polarization assay (FPA) to detect antibodies to smooth Brucella. From the 241 tested dogs, 132 reacted in the AGID and 128 reacted in the BAPA, but only two were positive in FPA. The seroprevalences of B. canis and smooth Brucella infections in dogs in Araguaína were 54.77% (95% CI: 48.25 to 61.17%) and 0.83% (95% CI: 0.10 to 2.97%), respectively. The analysis of risk factors showed associations between B. canis infection and vaccination against leptospirosis, and between B. canis infection and use of manufactured food. In conclusion, data from the present study showed a low prevalence of infection by s

Anticorpos anti-Brucella abortus em equídeos errantes do município de Mossoró, Rio Grande do Norte / Anti-Brucella abortus antibodies in free-ranging equids from Mossoró, Rio Grande do Norte, Brazil

Os objetivos deste trabalho foram (i) determinar a ocorrência da infecção por Brucella abortus em equídeos de vida livre no município de Mossoró, Rio Grande do Norte e (ii) avaliar possíveis fatores associados a esta infecção. Soros de 227 equídeos (178 asininos, 43 equinos e 6 muares), capturados pela polícia rodoviária e funcionários da prefeitura, foram coletados por punção venosa. A pesquisa de anticorpos anti-Brucella abortus foi realizada empregando-se, como triagem, o teste do antígeno acidificado tamponado (AAT) e como confirmatório o teste de redução pelo 2-Mercaptoetanol (2ME). Dos animais testados, quatro (1,76%) foram positivos para anticorpos anti- B. abortus. Todos os positivos eram equinos (9,30%, 4/43). A análise das variáveis levantadas (sexo e idade) como possíveis fatores associados à infecção por B. abortus não revelou a existência de associação entre estas e a soropositividade. Assim, o presente estudo permite concluir que a infecção por B. abortus está presente em equinos do município de Mossoró, Rio Grande do Norte.

The aims of the present study were (i) to determine the occurrence and (ii) to evaluate possible factors associated with infection by Brucella abortus in free-ranging equids from Mossoró, Rio Grande do Norte, Brazil. Sera from 227 free-ranging equids (178 donkeys, 43 horses and 6 mules), captured by the highway police and the prefecture agents, were screened by the rose bengal test (RBT) and confirmed for B. abortus-antibodies by the standard tube agglutination (STAT) and the 2-mercaptoethanol (2ME) tests. Of the 227 equids tested, four (1.76%) were positive for B. abortus antibodies. All were horses, which resulted in an observed frequency of infection for this species of 9.30% (4/43). No association was found among seropositivity for B. abortus and the age and sex. Thus, data from the present study showed that infection by B. abortus is present among horses in Mossoró, Rio Grande do Norte, Brazil.

Fatores de risco e presença de anticorpos contra Brucella canis e amostras lisas de Brucella em cães do município de Araguaína, Tocantins, Brasil / Risk factors and presence of antibodies to Brucella canis and smooth Brucella in dogs from the municipality of Araguaína, Tocantins, Brazil

The aim of this survey was to verify the occurrence of anti-Leptospira spp. antibodies in captive animals in the Parque Zoobotânico Arruda Câmara, João Pessoa, Paraíba State, Northeastern Brazil. Blood samples were collected from 49 animals: 26 mammals of the species Sapajus libidinosus, Cebus flavius, Saimiri sciureu, Coendu sp., Pseudalopex vetulus, Leopardus pardalis, Leopardus tigrinus, Galactitis vitata, Eira barbara, Nasua nasua, Tayassu tajacu and Ratus norvegicus; 10 birds of the species Penelope jacucaca, Pavo cristatus, Anodorhynchus hyacinthinus, Ara chlorothpterus, Pionites leucogaster, Polyborus plancus, Geranoaetus melanoleucus and Urubitinga urubitinga; and 13 reptiles of the species Caiman latirostris, Paleosuchus trigonatus, Caiman crocodilus, Tupinabis merinae, Tupinambis teguixin, Boa constrictor, Corallus hortulanus, Python molurus, Bufocephala vanderhaegei, Geochelone denticulata and Geochelone carboraria. Sera were examined by the microscopic agglutination teste (MAT) using 24 serovars as antigens and cut-off point of 1:100. One ocelot (Leopardo pardalis) presented positive reaction for the Icterohaemorrhagiae serovar with titer of 100, however, it did not show any clinical sign of the infection. Sinantropic rodents are the main reservoirs of this serovar, which suggests the need of maintenance and continuous evaluation of rodent control programs.

Canine brucellosis is an infectious disease of worldwide distribution that can affect dogs, wild canids and man. It is caused by Brucella canis, but dogs can also be infected by smooth Brucella such as B. abortus and B. suis. Due to the increasing importance of dogs in our society, to the scarcity of information about canine brucellosis in the country and its zoonotic character, the aims of the present study were (i) to conduct a survey on the infection by B. canis and smooth Brucella in dogs from the municipality of Araguaína, Tocantins, Brazil, and (ii) to evaluate the risk factors associated with these infections. Sera from 241 dogs were analyzed by agar gel immunodiffusion (AGID) to detect B. canisantibodies, and Buffered Acidified Plate Antigen test (BAPA) and fluorescence polarization assay (FPA) to detect antibodies to smooth Brucella. From the 241 tested dogs, 132 reacted in the AGID and 128 reacted in the BAPA, but only two were positive in FPA. The seroprevalences of B. canis and smooth Brucella infections in dogs in Araguaína were 54.77% (95% CI: 48.25 to 61.17%) and 0.83% (95% CI: 0.10 to 2.97%), respectively. The analysis of risk factors showed associations between B. canis infection and vaccination against leptospirosis, and between B. canis infection and use of manufactured food. In conclusion, data from the present study showed a low prevalence of infection by s

Prevalência de anticorpos contra o vírus da língua azul em ovinos do Distrito Federal / Prevalence of bluetongue virus antibodies in sheep from Distrito Federal, Brazil

O objetivo deste trabalho foi estimar a prevalência de anticorpos contra o vírus da língua azul (BTV) em rebanhos ovinos do Distrito Federal. Soros de 606 ovinos, pertencentes a 18 propriedades, foram analisados pela técnica de imunodifusão em ágar gel (AGID), para pesquisa de anticorpos contra o BTV. As prevalências de rebanhos e de animais infectados pelo vírus da língua azul no Distrito Federal foram respectivamente de 100% (IC 95%: 84,67% a 100%) e de 52,37% (389/606) (IC 95%: 35,76% a 68,98%). Assim, o presente estudo permite concluir que o vírus da língua azul está amplamente disseminada no rebanho ovino do Distrito Federal.

The aims of the present study were to determine the prevalence of bluetongue virus antibodies in sheep from Distrito Federal. Sera from 606 sheep of 18 herds were submitted to the agar-gel immunodiffusion for bluetongue virus antibodies. The prevalences of bluetongue infection found in Distrito Federal were 100% (CI 95%: 84.67 to 100.00) for flocks and 52.37% (389/606) (CI 95%: 35.76 to 68.98) for animals. Thus, data from the present study showed that infection by bluetongue virus is highly widespread in sheep flocks in the Distrito Federal, which intensifies the need for assessments on the impact of this disease in Brazil.