Syndemic health crises-The growing role of National Public Health Institutes in shaping a coordinated response.

Countries across the world are experiencing syndemic health crises where infectious pathogens including COVID-19 interact with epidemics of communicable and non-communicable diseases. Combined with war, environmental instability and the effects of soaring inflation, a public health crisis has emerged requiring an integrated response. Increasingly, national public health institutes (NPHIs) are at the forefront of leading this, as demonstrated at the 2022 Annual Meeting of the International Association of National Public Health Institutes (IANPHI). These effects are particularly evident where conflict is exacerbating health crises in Ukraine and Somalia. In Ukraine, medical and public health workers have been killed and infrastructure destroyed, which require major efforts to rebuild to international standards. In Somalia, these crises are magnified by the effects of climate change, leading to greater food insecurity, heat-related deaths and famine. National public health institutes are crucial in these contexts and many others to support integrated political responses where health challenges span local, national and international levels and involve multiple stakeholders. This can be seen in strengthening of Integrated Disease Surveillance and work towards the Sustainable Development Goals. National public health institutes also provide integration through the international system, working jointly to build national capacities to deliver essential public health functions. In this context, the 2022 IANPHI Annual meeting agreed the Stockholm Statement, highlighting the role that NPHIs play in tackling the causes and effects of interconnected global and local challenges to public health. This represents an important step in addressing complex health crises and syndemics which require whole-of-society responses, with NPHIs uniquely placed to work across sectors and provide system leadership in response.

Building the evidence base for global health policy: the need to strengthen institutional networks, geographical representation and global collaboration.

National public health institutes and WHO collaborating centres, and their global networks, are a key resource to support public health system strengthening with essential public health functions and generate evidence for health policy central to national health and socioeconomic development. The COVID-19 pandemic has laid bare global inequities in public health capacities, made urgent the need to examine sources of global knowledge and understand how to better invest in and use public health institutes and their capacities. This analysis paper incorporates experiences and perspectives from the WHO and International Association of Public Health Associations including the ongoing pandemic and work conducted in the UK-WHO 'Tackling Deadly Diseases in Africa Programme'. We acknowledge geographical disparities in public health capacities both within and across countries and regions, provide examples of novel ways of working for global health actors, and define the challenging environment in which public health authorities operate. We identify four incentives for all countries to invest in public health and strengthen institutions: (1) transparency and trust; (2) socioeconomic dividends; (3) collective health protection and (4) knowledge sharing and equity. By pursuing shared priorities; enabling voices from low-resource settings to be more equitably heard; facilitating collaboration and learning within and across regions, we articulate actionable next steps to develop and better harness public health institutes and international networks.

Improving the health of homeless people.

Earlier this year I was asked to speak at a Queen's Nursing Institute conference on homeless and inclusion health, to explain how Public Health England (PHE) is supporting nurses to improve the health of people experiencing homelessness.