An unprotected public.
Kahn
Jeffrey
J
University of Minnesota, USA.
D003140:Communicable Disease Control / Q000379:methods / Q000639:trends*; D003141:Communicable Diseases / Q000276:immunology*; D014943:Global Health; D006801:Humans; D032521:Immunity, Herd / Q000941:ethics; D011158:Population Growth; D011634:Public Health / Q000941:ethics*; D014481:United States; D014611:Vaccination / Q000941:ethics*