Investments in immunization yield a rate of return on a par with educating our children - and higher than nearly any other development intervention.

We've actually eliminated Type II polio in the world, at least as far as we can tell.

As variable as flu is, HIV makes flu look like the Rock of Gibraltar. The virus that causes AIDS is the trickiest pathogen scientists have ever confronted.

For just a few dollars a dose, vaccines save lives and help reduce poverty. Unlike medical treatment, they provide a lifetime of protection from deadly and debilitating disease. They are safe and effective. They cut healthcare and treatment costs, reduce the number of hospital visits and ensure healthier children, families and communities.

Investments in immunization yield a rate of return on a par with educating our children - and higher than nearly any other development intervention.

Healthy children are more likely to attend school and are better able to learn. Healthy workers are more productive. More productive economies mean greater stability in developing countries and improved security in the West.

When it comes to providing aid, developing innovations and making bold steps that change the course of history, the United States is usually on the front lines.