Diseases

Agency for Healthcare Research and Quality U.S. Department of Health & Human Services
CDC Wonder  Centers for Disease Control and Prevention
National Center for Health Statistics Centers for Disease Control and Prevention
Statistical Abstract U.S. Census Bureau

Chronic Diseases

Atherosclerosis Risk in Communities Study Gillings School of Global Public Health UNC-Chapel Hill
Cancer Mondial International Agency for Research on Cancer
Diabetes Data and Statsitics Centers for Disease Control and Prevention
Heart and Stroke Statistics American Heart Association
National Cancer Institute Statistics National Cancer Institute
Surveillance, Epidemiology, and End Results Program(SEER) National Cancer Institute
US Renal Data System National Institute of Diabetes and Digestive and Kidney Diseases

Communicable Diseases

Influenza Fact Sheet American Lung Association
Morbidity and Mortality Weekly Report Centers for Disease Control and Prevention
National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention Centers for Disease Control and Prevention
Pneumonia Fact Sheet American Lung Association
AIDSinfo UNAIDS
Vaccines and Immunization: Statistics and Surveillance Centers for Disease Control and Prevention