After an interval of several years of freedom from diphtheria, the first case developed at the Connecticut Hospital for Insane early in April, 1907. From then until May 15, 1908, there occurred ninety-two cases, fifty-seven of which were in employés and thirty-five in insane patients. During this period the throats of 4,081 healthy individuals were examined, with the result that ninety-five (2.08 per cent.) revealed the presence of the Klebs-Loeffler bacillus, so that the total number of people under quarantine was 187.
SOURCE OF INFECTION
The etiology in the greater number of cases can probably be ascribed to bacillus carriers. The source of infection in the first case can undoubtedly be traced to a visitor, the second case likewise possibly arose from an unknown outside source, but the epidemic was undoubtedly fostered by bacillus carriers, human and animal.In the first case the patient developed a sharp attack of tonsillar
FISHER JW. A DIPHTHERIA EPIDEMIC: ITS BEARING ON THE QUESTION OF BACILLUS CARRIERS, ANIMAL CARRIERS, AND THE NECESSITY OF MORE STRICT QUARANTINE REGULATIONS. JAMA. 1909;LII(6):439–442. doi:10.1001/jama.1909.25420320011002
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