Necrosis after Penicillin

It has been noted that outbreaks of poliomyelitis often occur during abnormally hot weather: a graph of the incidence of poliomyelitis in Cornwall, 1911-49, plotted against t'ie average mean daily temperature recorded at Falmouth for the third quarter of the year, shows that the incidence of the disease has risen above 0.05 per 1,000 on six occasions. These six epidemic years include four of the five highest mean average temperatures recorded for the third quarter in the span of years under consideration (1911, 1921, 1947, and 1949), and the other two epidemic years (1919 and 1945) show an abnormally high August temperature.