8 research outputs found
La depresión de Potrerillos : estudio morfológico
Fil: Viers, George.
Universidad Nacional de Cuyo. Facultad de Filosofía y Letra
La morfología del piedemonte andino en la provincia de Mendoza : los hechos y las concepciones antiguas
Fil: Viers, George.
Universidad de Toulouse. Facultad de Letras y Ciencias Humanas
Use of a case-control study and geographic information systems to determine environmental and demographic risk factors for canine leptospirosis
Leptospirosis is increasingly diagnosed as a re-emerging canine disease in
the USA. Our objectives were to describe potential risk factors for canine
leptospirosis infections in northern California, through the use of a
case-control study, and to perform a spatial analysis to investigate which
aspects of the landscape and land use patterns are important in the
transmission of leptospirosis. Forty-three cases and 59 controls were
enrolled into the study. Serological results showed that 17 (39.5%) of
the 43 dog cases were infected with serovar pomona. Cases were 7.86 times more
likely to have been walked in a rural environment rather than an urban
environment. Cases also had eight times higher odds of swimming in outdoor
water, and approximately 12 times higher odds of drinking from outdoor water
in the two weeks preceding illness. At smaller distances from the dogs'
homes (radius 0.5 km) hydrographic density was positively
correlated with cases, while at larger distances (radius 5 km) there was a positive relationship between leptospirosis cases and
percent of wetlands or public open space. Intervention measures for the
prevention of canine leptospirosis should include reducing access to
potentially infectious bodies of water that are close to canine homes, and
to large areas of wetlands and public open space in the general vicinity. We
have shown that a spatial analysis in conjunction with traditional
epidemiological analysis is a powerful combination in identifying risk
factors for infectious diseases