Antirabic Vaccination—Present Status

Abstract
This paper presents further confirmatory data on the new quantitative method of measuring the immunizing potency of antirabic vaccines. Mice are vaccinated and then given graded doses of a virulent rabies virus 3 weeks later. It was found that formalized vaccines did not protect the mice but that vaccines treated with chloroform were effective provided 2 times the stated dose was given. Findings in dogs parallelled these results. Exposure to u.-v. killed the virus but did not lessen its immunizing potency. Suitably irradiated vaccines protected mice against 10-100 intracerebral or 32-64 intra-musc. doses of virulent virus.

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