2007 American soldier vaccinated for smallpox three weeks before shipping out to Iraq returns home to visit his family. His two-year-old son, two weeks later, develops a severe and dangerous skin infection caused by vaccinia virus. Critically ill, the child spends seven weeks in the hospital and is successfully treated with new anti-smallpox viral therapy. Soldier’s wife also ill from smallpox, has a mild case, and recovers

Soldier’s Smallpox Inoculation Sickens Son
By JOHN SCHWARTZMAY 18, 2007
http://www.nytimes.com/2007/05/18/health/18smallpox.html