1 Section of Epidemiology, Vetsuisse Faculty, University of Zurich, Winterthurerstr. 270, 8057 Zurich, Switzerland. Electronic address: sonja.hartnack@access.uzh.ch.
2 Vector Control Division, Ministry of Health, Uganda Queen's lane, Kampala, Uganda; Department Biosecurity Ecosystems and Veterinary Public Health, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, P.O. Box 7062 Kampala, Uganda.
3 Department Biosecurity Ecosystems and Veterinary Public Health, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, P.O. Box 7062 Kampala, Uganda.