the.com/vaccination
Teaching your immune system to fight a war by reading the enemy's diary.
word originFrom vacca, Latin for cow, via cowpox
first jabEdward Jenner infected a boy with cowpox in 1796
smallpox kill countEradicated a disease that killed 300 million in 1900s
variolationChina was snorting dried smallpox scabs centuries earlier
herd effectVaccinating you also protects those who can't be