Lock down the shipyards and airports!
Lock down YOUR place you mean. No end of new diseases originating from your sinkhole.
Rangitis: Inflamation of the asshole. Spread by imflaming other assholes. Treated by stopping hanging around flaming assholes.
Rangomilalitis: Swollen eyes from watching excessive porn. Spread by sharing jars of hand cream. Treated by watching christian television or coldplay videos.
Rangatheria: Lockjaw caused by overuse of the throat muscles. Spread by practicing deapthroat techniques on chair legs. Treated by giving furniture to Good Sammys.
Rangalopagus: a red hairy elephant disease caught by watching Sesame Street. Spread by humping big bird. Untreatable, fatal and absurdly amusing.
Ranga Fever: A disease that causes attraction to horrific looking mammals. Spread by sheer animal desperation and bad eyesight. Treated by the application of a common sense patch.