Match the lettered years and time intervals below to the
numbered list of events in medical history.
- 1900-1909
- 1909
- 1918-1919
- 1922
- 1928-1945
- 1950
- 1952
- 1954
- 1980
- 1981
- Leukemia drugs developed
- AIDS is officially
recognized
- Insulin is isolated
- Salk produces polio
vaccine
- Fleming discovers
penicillin
- Bubonic plague hits San
Francisco
- Cure for syphilis is found
- Flu pandemic strikes
- First successful kidney transplant is
performed
- WHO declares smallpox is
eradicated
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