1. National Neuroscience Institute Singapore
2. Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR) Singapore
3. Epidemiology and Disease Control DivisionMinistry of Health Singapore
4. Communicable Disease CentreInstitute of Infectious Disease and Epidemiology, Tan Tock Seng Hospital Singapore
5. Saw Swee Hock School of Public HealthNational University of Singapore Singapore
6. Institute of Infection and Global HealthUniversity of Liverpool Liverpool UK