1 Department of Microbiology, Punjab Agricultural University, Ludhiana, 141004, Punjab, India The Trafford Group of Colleges, Manchester, WA14 5PQ, UK Independent Researcher, 07, Type IV Quarter, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, 796015, Mizoram, India Department of Veterinary Anatomy and Histology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, 796015, Mizoram, India.