2010s: President Barack Obama signs the health care reform legislation into law (March 23, 2010). Food safety, child nutrition, EPA regulations.

2000s: Emergency preparedness, obesity, climate change, built environment

1990s: Clinton Health Reform Plan, Gulf War impacts, tobacco, managed health care, vaccinations, E. coli, AIDS, school safety

1980s: AIDS, teen pregnancy, nuclear safety

1970s: War, global health, drug abuse, new technology, upgraded health facilities

1970s: War, global health, drug abuse, new technology, upgraded health facilities

1960s: Equality within public health work force, integration, the War on Poverty, birth control, public health training, environmental issues, consumer protection, human rights

1950s: Push for federal agency solely focused on health and federal health funds for states, health legislation and advocacy, accreditation of public health schools, polio, pasteurization and food safety

1940s: Professional standards, evaluations of schools of public health, infectious diseases, functions of local health departments

1930s: Communicable diseases, sanitation, laboratories, statistics, food safety, housing, education, poverty, medical care, war