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polio
The first major polio epidemic reported in the US occurs in Vermont,consiting of 132 total cases incuding som adults. -
Jonas Salk
Jonas Salk,the eldest son of russian jewish immigrants,was born.He invented the polio vaccine in 1953 -
Large outbreak of polio in US
A large outbreak of polio in the states of New York,New Jersey and connecticut. -
Iron lung
The iron lung machine was invented by Philip Drinker.The machine help people with polio to breath. -
Warm Springs Foundation
FDR started the warm springs foundation .The center was open to victims of polio and other physical disabilities. -
First trial of the vaccine
Maurice Brodie and John Kolmer failed on their trial to invente the vaccine. -
Pearl Harbor
The Japanese bombed Pearl Harbor,the United States entered world war 2 -
Success vaccine trial
News of the successful vaccine trials is annoced by Dr. Thomas Francis Jr. of the University of Michigan at a formal press conference held in April 12 in Ann Arbor( the site where the research data from the fail trials had been gathered and analyzed).A nationwide vaccination program is quickly started. -
Disneyland
Disneyland opened in July 1956 -
The Franklin Delano Roosvelt memorial
The Franklin Delano Roosvelt memorial open in May 2,1997