1. Department of Veterinary Medicine, University of Bari Aldo Moro, SP 62 Casamassima km 3, 70010 Valenzano, Italy
2. Department of Veterinary Public Health, University of Benin, Benin City 301154, Nigeria
3. Interdisciplinary Department of Medicine-Section of Occupational Medicine, University of Bari, 70124 Bari, Italy
4. Department of Microbiology and Immunology, Veterinary Research Institute, National Research Centre, Dokki 12622, Egypt
5. Department of Veterinary Microbiology, College of Veterinary Medicine, Michael Okpara University of Agriculture, Umudike 440101, Nigeria
6. Department of Veterinary Pathology and Microbiology, University of Nigeria, Nsukka 410001, Nigeria