Depending on when and where you were born, you might have a particular scar on your arm that everyone else around you also has. This, as many of you probably already know, is the smallpox vaccine.

Think of it as the very first vaccine passport, if you will: a scar that told everyone you had been successfully vaccinated against smallpox. And yep, you guessed it, it’s that very scar that my ...

PENGUIN PRESS, MARCH 2011 O ur skins record the histories of life’s close scrapes. One of the most common marks that humans carry is, we hope, bound for extinction: the nickel-sized cicatrix left by a ...

Small-pox does not tend to spread extensively in a ... the resumption is that re-vaccination was useful. " A large scar is no evidence of genuine vaccination, nor is a irgc and painful sore.