1. National Centre for Immunisation Research and Surveillance of Vaccine Preventable Diseases (NCIRS), The Children’s Hospital at Westmead, and the Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Australia
2. School of Public Health, University of Sydney, Sydney, Australia
3. Health Informatics department, Saudi Electronic University, Riyadh, Saudi Arabia.
4. School of Public Health and Community Medicine, University of New South Wales, Sydney, Australia
5. Marie Bashir Institute for Infectious Diseases and Biosecurity, School of Biological Sciences and Sydney Medical School, University of Sydney, Sydney, Australia