a1 Department of Microbiology, Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh
a2 Department of Anatomy and Histology, Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh
a3 Department of Livestock Services, Dhaka, Bangladesh
a4 Department of Medicine and Surgery, Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh
a5 Department of Veterinary Disease Biology, Faculty of Life Sciences, Copenhagen University, Copenhagen, Denmark
Unprecedented high rates of anthrax outbreaks have been observed recently in cattle and humans in Bangladesh, with 607 human cases in 2010. By enrolling 15 case and 15 control cattle smallholdings in the spatial zone in July–September 2010, we conducted a case-control study, data of which were analysed by matched-pair analysis and multivariable conditional logistic regression. Feeding animals with uprooted and unwashed grass [odds ratio (OR) 41·2, 95% confidence interval (CI) 3·7–458·8, P=0·003], and feeding water hyacinth (Eichhornia crassipes) (OR 22·2, 95% CI 1·2–418·7, P=0·039) were independent risk factors for anthrax in cattle.
(Accepted October 31 2011)
(Online publication November 29 2011)
† These authors contributed equally to this work.