Cinética de la excreción de Coxiella burnetii en un rebaño caprinotras un brote de abortos
- Álvarez-Alonso, R.
- Barandika, J.F.
- Aduriz, G.
- Fuertes, M.
- Jado, I.
- Hurtado, A.
- M.ª Jesús Alcalde Aldea (coord.)
- Ceferina Vieira Aller (coord.)
- Juan José García García (coord.)
- Valentín Pérez Pérez (coord.)
- Raúl Bodas Rodríguez (coord.)
- Jesse Barandika (coord.)
Editorial: Ediciones Universidad de Salamanca ; Universidad de Salamanca
ISBN: 978-84-9012-793-3
Ano de publicación: 2017
Páxinas: 533-538
Congreso: Sociedad Española de Ovinotecnia y Caprinotecnia (SEOC). Jornadas (42. 2017. Salamanca)
Tipo: Achega congreso
Resumo
This study describes the investigation of an abortion outbreak occurred in a dairy goatflock of 72 Alpine goats. In the middle of January 2017, one placenta, six vaginal mucussamples and 12 sera from aborted dams were submitted for the investigation of the causesof abortion. Q fever diagnosis was based on the lesions observed in the placenta, presenceof compatible bacteria, detection of Coxiella burnetii DNA in placenta and vaginal mucussamples, and the high seroprevalence against Coxiella. The abortion rate during the seasonreached 80.6% (58/72). To monitor C. burnetii shedding, vaginal mucus, faeces and milksamples were collected monthly during four months from 35 aborted dams. Environmentalsamples (aerosols) were also collected. Bacterial shedding load was high (vaginalmucus>faeces>milk), and lasted for at least 4 months after abortion, mainly through faeces,which favoured environmental contamination. Thus, C. burnetii was detected in aerosolscollected both indoors and outdoors the farm premises throughout the study. Molecularcharacterisation of C. burnetii identified genotype SNP-1 – MST-13, a genotype previouslyfound in sheep, cattle and human clinical cases. After Q fever diagnosis, several controlmeasures were implemented to prevent contamination outside the farm, access of visitorswas limited, and replacement kids were vaccinated with phase I vaccine.