Experiments are reported which describe the isolation of poliomyelitis virus from the throats of two patients during an attack of so called abortive poliomyelitis (Wickman type), or what we have termed characteristic minor illnesses in association with poliomyelitis.

This finding represents added evidence in favor of the belief, previously held by many observers, that certain types of minor illness, which accompany an epidemic of poliomyelitis, probably represent mild cases of the disease.

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