1. Aklilu Lemma Institute of Pathobiology; Addis Ababa University; Addis Ababa Ethiopia
2. Department of Microbiology, Immunology & Parasitology, College of Health Sciences; Addis Ababa University; Addis Ababa Ethiopia
3. Department of Veterinary Preventive Medicine; The Ohio State University; Columbus Ohio
4. Department of Microbial Infection and Immunity, Infectious Diseases Institute; The Ohio State University; Columbus Ohio
5. Department of Pharmacology and Clinical Pharmacy, College of Health Sciences; Addis Ababa University; Addis Ababa Ethiopia