JAMA. 1888;X(15):465-466. doi:10.1001/jama.1888.02400410021006.
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In complying with the request of a correspondent, in The Journal for March 31, 1888, we gave as the formula for preventing diphtheria "an abundance of pure air, good water, wholesome food, clean soil and a clean personalty." Now we are asked by another highly esteemed correspondent, whose letter can be found in another column, whether we have not "accidentally given the wrong formula." And he suggests as the "correct formula for the prevention of diphtheria... isolation and disinfection." In reply, we ask whether our formula was a mistake, or whether our correspondent has mistaken the object for which our formula was given? If the conditions given in our formula actually exist in any community or household, what can our sanitarian find to isolate or disinfect? The coexistence of the conditions being established, the only thing necessary is to maintain them in statu quo by preventing the introduction of infection


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