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Denver, Colorado Local News

Today in History: September 28, Alexander Fleming discovers penicillin

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Today is Saturday, Sept. 28, the 272nd day of 2024. There are 94 days left in the year.

Today in history:

On Sept. 28, 1928, Scottish medical researcher Alexander Fleming discovered penicillin, the first effective antibiotic.

Also on this date:

In 1781, American forces in the Revolutionary War, backed by a French fleet, began their successful siege of Yorktown, Virginia.

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The Associated Press

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