Abstract
Conclusions
1. The Russian Type 4 polio-virus is Coxsackie A7. 2. The Russian virus is capable of causing polio-type lesions in the monkey CNS. 3. American strains of Coxsackie A7 are likewise pathogenic for monkeys and in certain inoculated animals produce histological changes in the CNS which are indistinguishable from those caused by polioviruses. 4. Coxsackie A7 infections are probably prevalent in the U.S.
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