Smallpox.
D002644:Chickenpox / Q000175:diagnosis; D019411:Clinical Laboratory Techniques; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D008297:Male; D012899:Smallpox / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D014115:Toxemia / Q000150:complications; D014611:Vaccination; D014615:Vaccinia / Q000175:diagnosis