1. Department of Public Health, Pest Management Centre, Sokoine University of Agriculture, Morogoro, Tanzania.
2. Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Morogoro, Tanzania.
3. Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark.
4. Provost's Office, Tumaini University Dar es Salaam College (TUDARCo), Dar es Salaam, Tanzania.