1. CIBIO - Research Centre for Biodiversity and Genetic Resources; Campus Agrário de Vairão R. Padre Armando Quintas 7 Vairão Portugal
2. Holetta Agricultural Research Center; Ethiopian Institute of Agricultural Research; PO Box 2003 Addis Ababa Ethiopia
3. Virology Division; Microbiology Department; College of Medicine; Taif University; 5700 Al-Taif Saudi Arabia
4. Virology Department; Faculty of Veterinary Medicine; Beni-Suef University; Beni-Suef 62511 Egypt
5. College of Veterinary Medicine; Sudan University of Science and Technology; PO Box 204 Khartoum North Sudan
6. Deanship of Scientific Research; Sudan University of Science and Technology; PO Box 407 Khartoum Sudan
7. Department of Biology; Faculty of Sciences; University of Porto; Rua do Campo Alegre S/N FC4 4169-007 Porto Portugal