Typhoid fever

[In 1918] “It is no surprise that Edsall [in teaching Harvard students] was still using typhoid fever as his base line in the infectious diseases. A thorough understanding of typhoid gave a doctor a good grounding in those days when typhoid was still the chief summer disease. It was beginning to drop off sharply, however, with the purification of water supplies” (Aub & Hapgood, 152).