Believe it or not, there's an acute drug shortage in American medical facilities, and it's only going to get worse. That's because from start to finish, it takes about three weeks to manufacture sterile saline solution, which is used in virtually every medical procedure.
It seems weird that something so simple should be so complex; how hard can it be to make salt water? As it happens, making salt water's not hard - but making it sterile is. Who'd have seen this coming?