Blimey, I never thought I'd see this one pop up. Same thing happened to my sister in law and I cleaned. Just do usual (as if cleaning up blood) with some form of sanitisation like Microsan/Clensan (prochem) or similar from other suppliers.
As its that new you'll find it comes up fairly easily. Just make sure you hand srcub right down as blood has a tendency to wick upon drying.
Pete