Influenza has been with us a long time. According (51) some Greek writers on medical history, the outbreak of 412 B. C. was of influenz
a. The same has been suggested of the sickness that swept through the Greek army (52) Syracuse in 395B.C. Flu is a disease that moves most quickly among people (53) in crowded conditions, hence, it is likely to attack armies. During the nineteenth century there were five widespread (54) of influenza. The last of the five (55) in 1889 and marked the beginning of the story of influenza in our time. Like the recent outbreak, (56) started in Asia. For more than forty years before that outbreak, influenza had steadily (57) and was believed to be dying out. A new group of outbreaks was introduced by the great outbreak of 1889-1890 and for the next quarter of a century flu (58) a constant threat. In April 1918 A. at B. to C. in D. from