Today we know the best way to prevent the spread of Ebola infection is through public health measures.

Better ways to diagnose, treat and prevent E. coli 0157:H7 infections are badly needed.

You can have an epidemic in a state. You can have it in a region. You can have it in a country where the critical level of disease passes a certain threshold and we call that an epidemic threshold.

I believe in striving for excellence. I sweat the big and small stuff! I do not apologize for this.

Previous efforts to eradicate malaria failed for several reasons, including political instability and technical challenges in delivering resources, especially in certain countries in Africa.

The worst potential bio-terrorist is nature itself.

We feel confident that there won't be an outbreak.