Reply when questioned on the safety of the polio vaccine he developed:

It is safe, and you can't get safer than safe.

My own experience of over 60 years in biomedical research amply demonstrated that without the use of animals and of human beings, it would have been impossible to acquire the important knowledge needed to prevent much suffering and premature death not only among humans but also among [other] animals.

If you give us a safe vaccine, we'll use it. It shouldn't be polio versus autism.

The anthrax vaccine is very effective and safe.

They want to know how we are ensuring the vaccine is truly the vaccine and safe. We're getting inquires from customers and the public.

We need a vaccine,