50 years ago in the Journal of Pediatrics: smallpox and air travel: need for vigilance.
Rainbow Babies and Children's Hospital, Cleveland, Ohio, USA.
Philip
P
Toltzis
D023482:Bioterrorism / Q000266:history; D014943:Global Health; D049673:History, 20th Century; D006801:Humans; D012899:Smallpox / Q000266:history / Q000517:prevention & control / Q000635:transmission*; D014195:Travel