On April 25, 1954, the largest medical field trial in history began, testing the polio vaccine.

On April 25, 1954, the largest medical field trial in history began, testing the polio vaccine.

April 25: The Polio Pioneers

History Happened Today is your daily five-minute journey into the moments that shaped our world. Each morning, we uncover a fascinating event that occurred on this exact date, sometimes famous, sometimes forgotten, always worth knowing. From breakthroughs and battles to inventions, discoveries, and the stories behind the people who made them, you’ll get a quick, engaging snapshot of history’s most interesting moments. Perfect for your commute, your coffee break, or your daily dose of curiosity.

History

History Happened Today is your daily five-minute journey into the moments that shaped our world. Each morning, we uncover a fascinating event that occurred on this exact date, sometimes famous, sometimes forgotten, always worth knowing. From breakthroughs and battles to inventions, discoveries, and the stories behind the people who made them, you’ll get a quick, engaging snapshot of history’s most interesting moments.Perfect for your commute, your coffee break, or your daily dose of curiosity.

History Happened Today is your daily five-minute journey into the moments that shaped our world. Each morning, we uncover a fascinating event that occurred on this exact date, sometimes famous, sometimes forgotten, always worth knowing. From breakthroughs and battles to inventions, discoveries, and the stories behind the people who made them, you’ll get a quick, engaging snapshot of history’s most interesting moments. Perfect for your commute, your coffee break, or your daily dose of curiosity.

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April 25: The Polio Pioneers

April 25: The Polio Pioneers