Excerpt from Special Report of the Department of Public Health Relative to Varieties and Prevalence of Mosquitoes in the Commonwealth: Under Chapter 14 of the Resolves of 1939, December, 1940During the summer of 1938 there were 269 deaths from encephalomyelitis in horses, and 34 cases of encephalitis with 24 deaths among humans. This was the first time that the disease in humans was recognized as having been caused by the virus of encephalomyelitis of horses. While this disease was extremely prevalent in the summer of 1938, there were only 12 suspicious cases in horses in the summer of 1939 and only 8 in 1940, of which only 2 in 1939 and none in 1940 were proven. There was only, 1 suspicious human case in 1939, while none have thus far been reported in 1940.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.