Malaria, long believed to be due to bad air, is really
chargeable to a mosquito discovered by Dr. Laveran, 1880,
and first detected in America by Dr. Sternberg, 1886.
Healthy individuals inoculated with blood containing the
parasite develop malarial fever. The mosquito theory of
infection was advanced by Dr. A. F. A. King, Washington,
1883. Dr. Manson and Dr. Ross confirmed the theory by
observation and experiment. Five individuals exposed to the
July air of the Roman Campagna escape malaria by using
screens on doors and windows and nets over their beds. 89