The American Public Health Association (APHA) champions the health of all people and all communities. They strengthen the public health profession and speak out for public health issues and policies backed by science. APHA is the only organization that influences federal policy, has a nearly 150-year perspective, and brings together members from all fields of public health. APHA publishes the American Journal of Public Health and The Nation's Health newspaper. At their Annual Meeting & Exposition, thousands of people share the latest public health research. APHA leads public awareness campaigns such as Get Ready and National Public Health Week.