title: [Endemic and epidemic bovine neosporosis: description of two events in beef cattle].
abstract: The aim of this study was to describe two events in which Neospora caninum was involved in bovine abortions in beef cattle. In the first event, 11 abortions in 57 heifers were recorded in 45 days. One aborted heifer was 5 times more likely to be seropositive than a non-aborted heifer (OR=4.9; IC 1.2-19.9) (p<0.05). In the second event, no association between serological results and abortions were observed (OR=0,69; 0,06-7,31) (p>0.05). Neither antibodies nor isolation of other pathogens were achieved in any case. On the contrary, antibodies and pathognomonic histopathological lesions were observed in the four fetuses from both cases. Interestingly, the findings in the first event suggest the epidemic behavior of the disease. In contrast, in the second event it appears that few abortions were due to N. caninum, suggesting the presence of endemic neosporosis.
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina; Residencia interna en Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Patricio M
authors.initials: PM
authors.lastname: Calandra
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina; Residencia interna en Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: José M
authors.initials: JM
authors.lastname: Di Matía
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Dora B
authors.initials: DB
authors.lastname: Cano
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Ernesto R
authors.initials: ER
authors.lastname: Odriozola
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Juan A
authors.initials: JA
authors.lastname: García
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Ernesto J A
authors.initials: EJ
authors.lastname: Späth
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Anselmo C
authors.initials: AC
authors.lastname: Odeón
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Fernando A
authors.initials: FA
authors.lastname: Paolicchi
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Eleonora L
authors.initials: EL
authors.lastname: Morrell
authors.affiliation: Grupo Sanidad Animal, EEA INTA Balcarce, Argentina.
authors.forename: Carlos M
authors.initials: CM
authors.lastname: Campero
authors.affiliation: CONICET, Ciudad Autónoma de Buenos Aires, Argentina. Electronic address: moore.dadin@inta.gob.ar.
authors.forename: Dadín P
authors.initials: DP
authors.lastname: Moore
mesh_terms: D000034:Abortion, Veterinary / Q000453:epidemiology*; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D003048:Coccidiosis / Q000453:epidemiology / Q000662:veterinary*; D019353:Endemic Diseases; D018688:Neospora
keywords: Abortion; Aborto; Beef cattle; Bovinos para carne; Diagnosis; Diagnóstico; Neosporosis; Serology; Serología