The role of community systems Communities are not just beneficiaries of services. Communities are also actors, making vital contributions to improving public health. They expand the reach of services, engage people with health care, and overcome stigma and discrimination. Community organizations and networks have an important role to play in helping countries provide comprehensive health care services. They: have a unique ability to interact with affected communities can react quickly to community needs and issues and are highly effective at providing services Data shows that when communities get involved, programs have greater impact. By providing services, community systems help to ensure that those most in need are reached. And through advocacy efforts, they also help address the broader issues and barriers that prevent access to services.