title: Bioterrorism watch. Smallpox or chickenpox? How to make the diagnosis.
mesh_terms: D023482:Bioterrorism; D002487:Centers for Disease Control and Prevention, U.S.; D002644:Chickenpox / Q000175:diagnosis* / Q000503:physiopathology; D003937:Diagnosis, Differential; D006801:Humans; D012899:Smallpox / Q000175:diagnosis* / Q000503:physiopathology; D014481:United States