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Am J Dis Child. 1933;46(6):1338-1342. doi:10.1001/archpedi.1933.01960070104007.
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The relation which cats bear to the transmission of diphtheria has been questioned for many years. Reports by Low,1 Jewett,2 Barras,3 Porter,4 Simmons,5 Gwynn,6 Osborne,7 Symes,8 Turner9 and Priestley,10 as well as several editorials11 in medical journals, lend support to the belief that cats are capable of spreading the disease.

Investigations by Simmons,5 Klein,12 Renshaw,13 Welch and Abbott,14 Remlinger15 and Karlinski16 (quoted by Wharton17) tend to indicate that cats can contract and spread diphtheria. The most recent work, however, that reported by Savage18 in 1920, contradicts these early experiments.

EXPERIMENTS  Schick Test.—The Schick test was done on thirty-nine kittens and thirty-one cats, twice the concentration of the adult Schick dosage being used. The results in all the animals were negative after twenty-four, forty-eight and ninety-six hours.Susceptibility of Cats to


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