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2.
Sci Rep ; 8(1): 9772, 2018 06 27.
Artículo en Inglés | MEDLINE | ID: mdl-29950697

RESUMEN

Beta-hemolytic Streptococcus dysgalactiae is a well-known pathogen for a wide range of animals and humans. Two subspecies are recognized: (i) equisimilis, associated to disease in horses and humans, and (ii) dysgalactiae mainly isolated from animal illness with only a few humans' cases. This study describes the isolation and characterization of Streptococcus dysgalactiae subsp. dysgalactiae (SDSD) from vampire bats, maintained in captivity for research proposes. Animals presented neurologic, respiratory and gastroenteric symptoms and sudden death. Beta-hemolytic Gram-positive cocci were isolated in blood agar plates and further characterized as Lancefield group C. All isolates were identified as S. dysgalactiae by matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry and subspecies dysgalactiae was confirmed by 16S rRNA sequencing and phylogenetic analysis. Genotyping through SE-ALFP resulted in three profiles (A1-A3) with one bat being infected by profiles A1 and A3. This is the first report of SDSD causing illness in bats and especially in Desmodus rotundus species.


Asunto(s)
Quirópteros/microbiología , Infecciones Estreptocócicas/microbiología , Streptococcus/patogenicidad , Animales , ARN Ribosómico 16S , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Streptococcus/genética
3.
J Food Prot ; 81(7): 1073-1078, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29897272

RESUMEN

In Brazil, meat inspection occurs in a decentralized manner and consists of three types: (i) federal inspection (SIF), (ii) state inspection (SISP), and (iii) municipal inspection (SIM). The objective of this work was to discuss the three current inspection systems through the apparent prevalence of bovine brucellosis, a zoonosis that has an eradication program implemented by the Brazilian government. Nine abattoirs from federal, state, and municipal inspection systems were assessed and 1,490 animals were sampled. Serology for brucellosis was determined by the rose bengal test and the complement fixation test. The overall apparent prevalence (and 95% confidence interval) of brucellosis was 2.2% (1.5 to 2.9%). Apparent prevalence stratified by inspection system for SIF, SISP, and SIM was 0.4% (0.0 to 0.9%), 2.0% (0.8 to 3.2%), and 4.3% (2.5 to 6.1%), respectively. Multivariable logistic regression analysis revealed the odds ratio for finding an animal positive for brucellosis among inspection systems. A statistical difference ( P < 0.0015) was observed among surveillance systems, with SISP × SIF, SIM × SISP, and SIM × SIF having an odds ratio of 4,996, 2,304, and 11,494, respectively. Hence, the need for increasing official surveillance in state and municipal inspection systems seems to be necessary and could assist in the surveillance of bovine brucellosis and other diseases of interest to the federation. In addition, an increase in official presence would help to improve the selection of slaughtered cattle during ante- and postmortem inspection, with consequent impact on food safety and public health.


Asunto(s)
Mataderos , Brucelosis , Animales , Brasil/epidemiología , Brucelosis/epidemiología , Brucelosis/veterinaria , Bovinos , Inspección de Alimentos/métodos , Humanos , Carne/microbiología , Prevalencia , Zoonosis/microbiología , Zoonosis/prevención & control
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