The great plague in the time of Justinian--View as to its African origin, and strictly contagious nature, adopted by Gibbon--Admits, however, the necessity for an insalubrious condition of the atmosphere, in addition to the presence of the poison--Its reappearance at present in Northern Africa (Bengazzi)--Modern theories as to its origin and mode of propagation, refuted by the histories of plague, cholera, and typhus--Murrains pp. 15–25
An Enquiry Into the Origin and Intimate Nature of Malaria · The Wunder Library — complete classics, free to read, with narration.