1. Tropical Infectious Diseases Research & Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia
2. Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
3. Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, Petaling Jaya 47500, Malaysia