Etymologia: Surveillance.
D021821:Communicable Diseases, Emerging / Q000266:history* / Q000517:prevention & control; D005060:Europe; D049670:History, 17th Century; D049673:History, 20th Century; D049691:History, Medieval; D006801:Humans; D009626:Terminology as Topic; D014481:United States
Alexander Langmuir; etymologia; public health; surveillance