One in four Ashkenazi Jews is a carrier. We want to stop these diseases from spreading.

Today, one of the most important means of spreading diseases around the globe is air travel.

They scored about four times in a row and then we got one stop, and we scored on the other end. That helped us seal it.

I have done my best to represent the City of Tehama, ... But I feel I need to stop spreading myself thin and commit more time to my family and other obligations.

No one's worried -- there's precautions to stop it spreading through the room.

Land bridges were everywhere during the extinction, many species were spreading, and there were many diseases.