There is no cure, but there are safe and effective vaccines.

On April 12, 1955, he announced that his team had developed an effective and safe vaccine.

And they add that on top of all that, the vaccine, though safe, is relatively expensive.

"It's not going to lead to a safe vaccine."

There is a safe and effective vaccine to prevent rubella.

A weaker but safer vaccine may be made for those at risk.

A number of safe and effective oral vaccines for cholera are available.

"the greatest hope is in discovery of a safe and effective vaccine".

"We've now discovered a source of safe vaccine," he said in his office.

A safe and effective vaccine is now available to children aged 1 year or older to prevent chickenpox.