the.com/vaccine
a wanted poster shown to your immune system before the criminal arrives
means a substance that trains your immune system to recognize and fight a specific disease, usually given as a shot to prevent illness before exposure.
from From Latin vaccinus, "of or from cows" (vacca, "cow"). The cow earns its place honestly: in the late 18th century, Edward Jenner noticed that milkmaids who had caught cowpox seemed spared from the far deadlier smallpox. He used material from cowpox sores to protect against smallpox, and the technique took the cow's name with it. Louis Pasteur later broadened the word to cover all such preventives, in tribute to Jenner — so every modern vaccine still quietly tips its hat to a dairy cow.
- name origin
- From vacca, Latin for cow, via cowpox
- first one
- Jenner used cowpox against smallpox in 1796
- smallpox
- Only human disease ever fully eradicated
- mRNA
- Decades of research enabled COVID shots in months
- herd effect
- Protects those who cannot be vaccinated themselves
pfizer-biontech covid-19 — mrna vaccine developed in 2020, administered to over 2.5 billion people worldwide
polio vaccine — developed by jonas salk in 1955, reduced polio cases from 58,000 annually in us to near zero
measles-mumps-rubella — mmr vaccine introduced in 1971, eliminated measles transmission in many countries by 2000s
smallpox vaccine — first vaccine ever created by jenner in 1796, eradicated the disease globally by 1980