The virulence of strains of poliovirus for cynomolgus monkeys after subcutaneous injection

Abstract
The virulence of strains of the three types of poliovirus have been examined by the subcutaneous injection of monkeys. The strains used were the Sabin attenuated Types 1, 2 and 3, Cox attenuated Types 1, 2 and 3, the Brunenders Type 1 partially attenuated strain, MEF-1, Type 2 and Saukett, Type 3.The results obtained indicated that the subcutaneous route of injection offers a promising method for comparing and characterizing strains of poliovirus.