COSSI Our work Main navigation Aboriginal and Torres Strait Islander immunisation Australian Immunisation Handbook AusVaxSafety Clinical research COSSI About COSSI COSSI committee Join COSSI Knowledge sharing and dissemination COSSI reports and publications COVID-19 Disease surveillance and epidemiology Education and training Global Health National Vaccination Insights project New South Wales Immunisation Specialist Service (NSWISS) Paediatric Active Enhanced Disease Surveillance (PAEDS) PHN Immunisation Support program Population health Program evaluation Research to inform policy Sharing Knowledge About Immunisation (SKAI) Serosurveillance Social science in immunisation Vaccine coverage Vaccine safety The Collaboration on Social Science and Immunisation (COSSI) is a collective of researchers, healthcare professionals, people working in immunisation policy and practice, and consumer representatives who work collaboratively to improve vaccine acceptance and uptake. In 2022, COSSI was awarded a Public Health Association of Australia President's Award in recognition of the group’s excellent contribution to public health. About COSSI Read about COSSI objectives, funding and membership COSSI committee Read about how COSSI is governed Join COSSI Find out how you can join COSSI Knowledge sharing and dissemination COSSI holds bi-monthly meetings to exchange knowledge. Find out more COSSI reports and publications Read reports and publications by COSSI members here Our work Main navigation Aboriginal and Torres Strait Islander immunisation Australian Immunisation Handbook AusVaxSafety Clinical research COSSI About COSSI COSSI committee Join COSSI Knowledge sharing and dissemination COSSI reports and publications COVID-19 Disease surveillance and epidemiology Education and training Global Health National Vaccination Insights project New South Wales Immunisation Specialist Service (NSWISS) Paediatric Active Enhanced Disease Surveillance (PAEDS) PHN Immunisation Support program Population health Program evaluation Research to inform policy Sharing Knowledge About Immunisation (SKAI) Serosurveillance Social science in immunisation Vaccine coverage Vaccine safety News & Events News | 06 November 2025 Papua New Guinea strengthens immunisation following detection of vaccine-derived poliovirus News | 31 October 2025 NCIRS releases annual report on immunisation coverage News | 30 October 2025 Can you get chickenpox twice? Or if you’re vaccinated? Experts answer 9 key questions News | 23 October 2025 Pacific island countries and Japan achieve measles and rubella elimination: a milestone for regional health security 10479 views