Whatever happened to the "old-time" infections.
D001424:Bacterial Infections / Q000453:epidemiology*; D002644:Chickenpox / Q000453:epidemiology; D004165:Diphtheria / Q000453:epidemiology; D004698:Endocarditis, Subacute Bacterial / Q000453:epidemiology; D006801:Humans; D008404:Massachusetts; D008457:Measles / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology; D012541:Scarlet Fever / Q000453:epidemiology; D013203:Staphylococcal Infections / Q000453:epidemiology; D014376:Tuberculosis / Q000453:epidemiology; D014777:Virus Diseases / Q000453:epidemiology*; D014917:Whooping Cough / Q000453:epidemiology