ABSTRACT
Abstract This is a cross-sectional study to assess the presence of antibodies in ruminants against selected pathogens associated with reproductive disorders in cattle in four Brazilian states, including the zoonotic agent Coxiella burnetii. The used tests were Virus Neutralization Assay for IBR and BVD, Microscopic Agglutination Test for Leptospira spp., Indirect Fluorescent Antibody Test (IFAT) for C. burnetii and Toxoplasma gondii, and Enzyme-Linked Immunosorbent Assay for Neospora caninum and Trypanosoma vivax. Seropositivity for C. burnetii was 13.7% with titers from 128 to 131,072; 57.8% for BoHV-1, with titers between 2 and 1,024; 47.1% for BVDV-1a, with titers from 10 to 5,120; 89.2% for N. caninum; 50% for T. vivax; and 52.0% for Leptospira spp., with titers between 100 to 800 (the following serovars were found: Tarassovi, Grippotyphosa, Canicola, Copenhageni, Wolffi, Hardjo, Pomona and Icterohaemorrhagiae); 19.6% for T. gondii with titer of 40. This is the first study that has identified C. burnetii in cattle associated with BoHV and BVDV, N. caninum, Leptospira spp., T. gondii and T. vivax. Thus, future studies should be conducted to investigate how widespread this pathogen is in Brazilian cattle herds.
Resumo Este é um estudo transversal para avaliar a presença de anticorpos em ruminantes contra patógenos selecionados e associados a distúrbios reprodutivos em bovinos de quatro estados brasileiros, incluindo o agente zoonótico Coxiella burnetii. Os testes utilizados foram Teste de Vírus-Neutralização para BoHV e BVDV, teste de Aglutinação Microscópica para Leptospira spp., Reação de Imunofluorescência Indireta for C. burnetii e Toxoplasma gondii, e Ensaio de Imunoabsorção Enzimática para Neospora caninum e Trypanosoma vivax. A soropositividade para C. burnetii foi de 13,7% com títulos de 128 a 131.072; 57,8% para BoHV-1, com títulos entre 2 a 1.024; 47,1% para BVDV-1a, com títulos de 10 a 5.120; 89,2% para N. caninum; 50% para T. vivax; e 52,0% para Leptospira spp., com títulos entre 100 a 800 (sorovares encontrados: Tarassovi, Grippotyphosa, Canicola, Copenhageni, Wolffi, Hardjo, Pomona e Icterohaemorrhagiae) 19,6% para T. gondii com título de 40. Este é o primeiro estudo que evidencia a participação de C. burnetii em bovinos associada ao Vírus da Rinotraqueíte bovina infecciosa e da diarreia viral bovina, N. caninum, Leptospira spp., T. gondii e T. vivax em bovinos. Desta forma, futuros estudos devem ser conduzidos a fim de investigar o quão disseminado se encontra este patógeno em rebanhos bovinos brasileiros.
Subject(s)
Animals , Female , Cattle , Q Fever/veterinary , Trypanosomiasis, African/veterinary , Bovine Virus Diarrhea-Mucosal Disease/complications , Cattle Diseases/epidemiology , Toxoplasmosis, Animal/complications , Coccidiosis/veterinary , Leptospirosis/veterinary , Q Fever/complications , Q Fever/diagnosis , Q Fever/epidemiology , Toxoplasma/immunology , Trypanosomiasis, African/complications , Trypanosomiasis, African/diagnosis , Trypanosomiasis, African/epidemiology , Bovine Virus Diarrhea-Mucosal Disease/diagnosis , Bovine Virus Diarrhea-Mucosal Disease/epidemiology , Brazil/epidemiology , Agglutination Tests , Enzyme-Linked Immunosorbent Assay/veterinary , Cattle Diseases/microbiology , Cattle Diseases/parasitology , Cattle Diseases/virology , Seroepidemiologic Studies , Toxoplasmosis, Animal/diagnosis , Cross-Sectional Studies , Trypanosoma vivax , Coxiella burnetii/immunology , Coccidiosis/complications , Coccidiosis/diagnosis , Coccidiosis/epidemiology , Diarrhea Viruses, Bovine Viral/immunology , Neospora/immunology , Fluorescent Antibody Technique, Indirect/veterinary , Abortion, Veterinary , Endometritis/etiology , Infertility, Female/etiology , Leptospira/immunology , Leptospirosis/complications , Leptospirosis/diagnosis , Leptospirosis/epidemiologyABSTRACT
Q fever is a zoonotic infection caused by Coxiella burnetti, which has been previously regarded as an uncommon infectious disease in Korea but is sporadically reported recently. Common manifestations of acute Q fever usually present as influenza-like illness, pneumonia and occasionally hepatitis. Herein, we report 4 cases of acute Q fever as a cause of acute hepatitis and fever. All patients had fever and non-specific symptoms, and laboratory test showed acute hepatitis. Antibody surveys for many virus infections and bacterial cultures were negative. Finally, they were diagnosed acute Q fever by an indirect microimmunofluorescence test. Liver biopsy in 3 patients revealed granuloma including one with typical fibrin-ring. All patients had complete resolution of symptoms and signs with doxycycline treatment. Q fever should be considered in the differential diagnosis of patients with fever of unknown origin with acute hepatitis in Korea.
Subject(s)
Adult , Humans , Male , Middle Aged , Acute Disease , Anti-Bacterial Agents/therapeutic use , Coxiella burnetii/isolation & purification , Doxycycline/therapeutic use , Fluorescent Antibody Technique, Indirect , Hepatitis/diagnosis , Q Fever/complications , Rifampin/therapeutic useABSTRACT
Se informa un caso de fiebre y granulomas hepáticos característicos, cuyo diagnóstico final fue fiebre Q. El interés de tal caso radica, por un lado, en que no cuenta con antecedentes epidemiológicos y, por otro, tampoco con la presentación clínica típica