Mal Moulee by Ella Wheeler Wilcox — Read

Percy found himself so ill the next morning, that he was obliged to send for his physician, Dr. Sydney.

Ever since his return from South America, he had been losing strength and flesh, and a dull ache in his side, and darting pains throughout his entire body had rendered his nights restless, and his days full of lassitude. His physician had answered him that it was a "touch of malaria, contracted in the beastly climate of South America," and Percy had relied on quinine and time to effect a cure.