Encephalitis Lethargica

Europe

1916
1916
January 1917
April 17 1917
1918
February 1919
1931
October 1931
1993
2002
2004

New York City

February 1918
1919
February 1919
1922 - 1927
1923 - 1931
1925
1929
1934 - 1945
1938
1945
1946
1966
March 1969
1982
2006