OBJECTIVE: To determine whether there was a temporal trend in prevalence of leptospirosis among dogs in the United States and Canada and to determine whether age, sex, and breed were risk factors for the disease. DESIGN: Retrospective study. ANIMALS: 1,819,792 dogs examined at 22 veterinary teaching hospitals between 1970 and 1998. PROCEDURES: The Veterinary Medical Data Base was searched for records of dogs in which a diagnosis of leptospirosis was made, and hospital prevalence was calculated. Logistic regression was used to examine the association between leptospirosis and age, sex, and breed. RESULTS: 677 dogs with leptospirosis were identified. Thus, hospital prevalence was 37 cases/100,000 dogs examined. A significant increase in leptospirosis prevalence between 1983 and 1998 was identified. Male dogs were at significantly greater risk of leptospirosis than were female dogs; dogs between 4 and 6.9 years old and between 7 and 10 years old were at significantly greater risk than dogs < 1 year old; and herding dogs, hounds, working dogs, and mixed-breed dogs were at significantly greater risk than companion dogs. CONCLUSIONS AND CLINICAL RELEVANCE: The prevalence of leptospirosis among dogs examined at veterinary teaching hospitals in the United States and Canada has increased significantly since 1983. Male dogs of working and herding breeds were at greater risk.
OBJECTIVE: To determine whether there was a temporal trend in prevalence of leptospirosis among dogs in the United States and Canada and to determine whether age, sex, and breed were risk factors for the disease. DESIGN: Retrospective study. ANIMALS: 1,819,792 dogs examined at 22 veterinary teaching hospitals between 1970 and 1998. PROCEDURES: The Veterinary Medical Data Base was searched for records of dogs in which a diagnosis of leptospirosis was made, and hospital prevalence was calculated. Logistic regression was used to examine the association between leptospirosis and age, sex, and breed. RESULTS: 677 dogs with leptospirosis were identified. Thus, hospital prevalence was 37 cases/100,000 dogs examined. A significant increase in leptospirosis prevalence between 1983 and 1998 was identified. Male dogs were at significantly greater risk of leptospirosis than were female dogs; dogs between 4 and 6.9 years old and between 7 and 10 years old were at significantly greater risk than dogs < 1 year old; and herding dogs, hounds, working dogs, and mixed-breed dogs were at significantly greater risk than companion dogs. CONCLUSIONS AND CLINICAL RELEVANCE: The prevalence of leptospirosis among dogs examined at veterinary teaching hospitals in the United States and Canada has increased significantly since 1983. Male dogs of working and herding breeds were at greater risk.
Authors: A M O'Connor; J M Sargeant; I R Dohoo; H N Erb; M Cevallos; M Egger; A K Ersbøll; S W Martin; L R Nielsen; D L Pearl; D U Pfeiffer; J Sanchez; M E Torrence; H Vigre; C Waldner; M P Ward Journal: J Vet Intern Med Date: 2016-11-07 Impact factor: 3.333
Authors: John F Prescott; Beverly McEwen; Judith Taylor; J Paul Woods; Anthony Abrams-Ogg; Brian Wilcock Journal: Can Vet J Date: 2002-12 Impact factor: 1.008
Authors: George E Moore; Lynn F Guptill; Nita W Glickman; Richard J Caldanaro; David Aucoin; Lawrence T Glickman Journal: Emerg Infect Dis Date: 2006-03 Impact factor: 6.883
Authors: Sally Ann Iverson; Craig Levy; Hayley D Yaglom; Heather L Venkat; Aileen Artus; Renee Galloway; Sarah Anne J Guagliardo; Laura Reynolds; Melissa JoAnne Kretschmer; Margaret E LaFerla Jenni; Peter Woodward; Alison A Reindel; Sheena Tarrant; Tammy Sylvester; Ronald Klein; Peter Mundschenk; Rebecca Sunenshine; Ilana J Schafer Journal: J Am Vet Med Assoc Date: 2021-03-15 Impact factor: 1.936