1. Department of Microbiology , Lagos State University , Ojo, Lagos , Nigeria .
2. Department of Medical Microbiology and Parasitology, College of Medicine , University of Lagos , Idi-Araba, Lagos , Nigeria .
3. Virology Research Laboratory , CRL, College of Medicine , University of Lagos , Idi-Araba, Lagos Nigeria .
4. Department of Biochemistry, College of Medicine , University of Lagos , Idi-Araba, Nigeria .