Preliminary attempts to detect interactions between coliphages and two attenuated vaccine viruses.
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Animals↗
Biomedical subjects
Publications and source records attributed to R J Vallancourt.
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Most of the poliovirus vaccine distributed in the United States since 1962 has been of the live, oral type ( OPV ). Production problems have not been a major concern for the manufacturer. The statistics compiled by various authorities since the product was introduced relative to paralytic disease following the administration of OPV are discussed and recommendations for the use of OPV are cited.