A collective voice for advancing public health: why public health associations matter today.

We reflect on why public health matters today from the perspective of Canada's provincial, territorial, and national public health associations. As independent, non-profit organizations that transcend professional roles and sectors, public health associations are positioned to play an essential role in strengthening public health, broadly speaking, across Canada. We outline three reasons why public health associations matter today. First, public health associations are uniquely positioned to champion a public health perspective. Second, they represent and connect a diverse range of roles, professions, and stakeholders involved in public health. Finally, they are positioned for advocacy, providing a platform for participation to those who may not otherwise be able to engage but who understand the importance of a collective voice. These reasons why public health associations are important are not new, but arguably carry renewed importance in the context of a contemporary public health landscape characterized by, among other things, weakened formal public health infrastructure, neoliberal agendas and individualism, and public health imperatives such as growing economic and social inequity and ecological determinants of health that require intersectoral responses.