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AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
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dec 23, 1901 - Walter Reed

Description:

Found that yellow fever is transmitted by a mosquito rather than by direct contact

Added to timeline:

6 months ago
1
0
75
The Fight is Never Ending
Public and Global Health

Date:

dec 23, 1901
Now
~ 117 years ago
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