Скачать или смотреть Invention of World's First Vaccine | Chickenpox | Smallpox | Cowpox

The world's first vaccine was developed by Edward Jenner in 1796 to combat smallpox. This groundbreaking invention laid the foundation for modern immunology. Here's how it happened:

Key Details:
Observation:

Jenner noticed that milkmaids who had contracted cowpox (a milder disease affecting cows and humans) seemed immune to smallpox, a deadly disease.
Experiment:

Jenner took material from a cowpox sore on a milkmaid named Sarah Nelmes and inoculated it into an 8-year-old boy, James Phipps.
Later, he exposed the boy to smallpox, and James did not develop the disease.
Outcome:

The experiment was a success, proving that exposure to cowpox provided immunity against smallpox.
Jenner called this process “vaccination”, derived from the Latin word vacca, meaning "cow."
Impact:
Smallpox eradication: Over time, vaccination campaigns led to the global eradication of smallpox in 1980, declared by the World Health Organization (WHO).
Jenner’s work pioneered the field of vaccinology, inspiring the development of vaccines for other diseases.

#vaccine #smallpox