A variety of programs run by the National Institutes of Health, the Centers for Disease Control and Prevention, and state and local Public Health departments have greatly improved the health of most Americans. For example, the scourges of polio, cholera, and smallpox have been effectively eradicated from this country – a huge achievement. And vaccination programs have reduced by 95% our risks of contracting potentially debilitating diseases like hepatitis B, measles, mumps, tetanus, rubella, and diphtheria. Federal funds spent on buying and distributing these vaccines have saved countless lives and the billions of dollars it would cost to treat these illnesses. In addition, the dedicated scientists who work for the CDC are all that stand between Americans and a potentially catastrophic epidemic imported from abroad. The most likely and worrisome threat is from a new and deadly strain of bird flu. The last deadly flu epidemic to hit the United States, in 1918, killed over 675,000 people in matter of months.