In 1961, a girl returned from Karachi, Pakistan to Bradford, England, bringing the smallpox virus with her and unwittingly infecting ten other people. An outbreak in Meschede, Germany, in 1969 also started with a visitor to Karachi. This time it was a German electrician who’d travelled there; he would pass the infection on to seventeen others.[50] However, these events weren’t typical: most cases who returned to Europe didn’t infect anyone.
