Pl. Lithg-pereira et al., Evaluation of official eradication-campaigns data for investigating small-ruminant brucellosis in the province of Leon, Spain, PREV VET M, 51(3-4), 2001, pp. 215-225
Brucellosis official eradication-campaigns data were used to study the epid
emiology of the small-ruminant brucellosis infection in the province of Leo
n (northwest Spain). Data from three consecutive campaigns (1997-1999) were
retrieved from flock sheets from controlled flocks and from other official
statistics. In general, flock information was scarce, with a small percent
age of contradictory data and other deficiencies that might have affected t
he campaign results. Nevertheless, unconditional multivariable logistic reg
ression showed four risk factors for brucellosis infection in 1999: larger
flock size, higher percentage of flocks in the town that are seropositive a
nd having been brucellosis positive in 1997 and 1998. Despite of the scarci
ty of data available from official records, they were useful to explain, in
part, the extent of the SRB in the province of Leon in 1999. (C) 2001 Else
vier Science B.V. All rights reserved.