Vaccines

The word “vaccine” derives from the Latin word for cow. The English physician, Edward Jenner, coined it in his 1798 pamphlet An Inquiry into the Causes and Effects of the Variolae Vaccinae. The last two Latin words mean “Smallpox of the Cow,” or cowpox. Jenner postulated that cowpox causes mild disease in humans while protecting them from the more dangerous smallpox. His proposal for inoculation with a weak form of disease-causing matter to prevent serious illness became the central concept o