Badge of Infamy

Published in 1955, 'Badge of Infamy' by Lester del Rey follows Daniel Feldman, a doctor ostracized on Earth for saving a friend's life against Medical Lobby regulations. He finds refuge on Mars, where he is welcomed by colonists but pursued by authorities. As a Martian plague threatens humanity, Feldman becomes crucial in the search for a cure that could determine the fate of both Earth and Mars, amidst rising tensions and impending war.