Murray Leinster - This World Is Tabooby Murray Leinster -

There's an emergency on Dara and Calhoun, an Interstellar Medical Serviceman, feels duty-bound to respond. But Dara is under quarantine.
And if Calhoun goes there, he'll be targeted as a plague-carrier - who can be shot on sight. Will Calhoun risk everything for a planet that's taboo?