It's always an uncertainty. We're always at the infectious disease roulette table.

We cannot let our guard down, because a series of genetic changes could happen at any time that could allow this virus to pick up the capacity to move from person to person.

This is a hugely important first step.

We will be staying home, concerts won't be going on. We might close schools in some communities.

It's a late summer phenomenon, ... It walked right out of the textbook.

The kids were giving the hepatitis A virus to mom, dad and Uncle Tom. And so if they didn't get the disease, the parents were protected.

Stopping smoking is something I think I would have put right at the top of the list.

By protecting personal and public health, they are vaccines at their best.

We're depending on the American distribution system set out by private enterprise; that accounts for its complexity.

We should not expect perfection, or we'll be disappointed.

Vaccine production in this country is not tied to public health priorities.

The notion is that prevention beats therapy.

With every new disease, the most severe cases come to initial attention, and then as we look harder, we see milder cases.

It is a big day for science.

It's not a light switch, that three days after you take it, you're back to doing pushups and running.

People are trying to work out contingency plans to make sure there's a more equitable distribution. I'm sure it will never be perfect, but without work now, it'll certainly be chaotic later.

It's become one of the dominant infections of childhood.

Only half goes directly from the manufacturers to the end users (such as pharmacies). The other half goes through a very complex distribution chain, from one company to another to another, two or three times, before it gets to the end user.