Leveraging global expertise and experiences to develop the mosaic framework
The mosaic surveillance framework was developed by drawing on the experiences of a technical working group (TWG) that included WHO subject matter experts from more than 20 teams / departments at WHO headquarters, and members from WHO regional offices (RO) in all six WHO regions. To further obtain experiences and perspectives from countries of all socio-economic levels, a secretariat supported WHO Regional Offices as they worked with Country Offices and Ministry of Health partners to implement surveys and gather data on priority objectives, surveillance systems currently used to meet those objectives, and priority surveillance enhancements needed. The Regional Offices also convened regional consultations and focused discussions with countries, informed by surveys, to obtain input for the global consultation. WHO headquarters then hosted a global consultation entitled “’Crafting the Mosaic’: Resilient surveillance systems for respiratory viruses of pandemic potential” on 10 & 11 May 2022. This consultation included 340 in-person and on-line attendees including those working in surveillance at the country level, and representatives from WHO Country Offices, all six Regional Offices, WHO headquarters, and external partner organizations. The framework incorporated iterative feedback from the TWG, the WHO COVID-19 incident management team leadership, and external subject matter experts from the United States Centers for Disease Control and Prevention, The European Centre for Disease Prevention and Control, The Global Fund, The Bill and Melinda Gates Foundation, and The Rockefeller Foundation. The secretariat also collected case studies by working with WHO Regional Offices to obtain examples of implementation of different surveillance systems and studies to meet priority objectives. These case studies provide national authorities with examples of the use of different systems to help them move from a theoretical to practical level.