Значения термина carrying plague на английском

So you've had Selznik's migraine and know you're carrying plague.

He went so far as to forbid any servants from having contact with us, in case they should be carrying plague.

Although the owls have fleas capable of carrying plague, they are not infected-andtheir immunity could provide some interesting information to scientists studying the disease.

"And you're sure she isn't carrying plague?"