The Chinese University of Hong Kong (CUHK), The Chinese University of Hong Kong (CUHK) - Department of Medicine & Therapeutics, The University of Hong Kong, The University of Hong Kong - HKU-Pasteur Research Pole, The University of Hong Kong, The University of Hong Kong, The University of Hong Kong, The Chinese University of Hong Kong (CUHK), The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control, The University of Hong Kong - Environmental Microbiome Engineering and Biotechnology Lab, The University of Hong Kong, The University of Hong Kong and The Chinese University of Hong Kong (CUHK) - Department of Medicine & Therapeutics