system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following strains of wild poliovirus forms the salk type 1 component of inactivated polio vaccine?
assistant
The correct answer is  IPV is usually made from Mahoney (salk type I), MEF - 1 (salk type II) and saukett (salk type III) that are grown in cell culture. The harvested viral components are inactivated with formaldehyde. Leningrad - 3 is a strain of mumps virus used for making mumps vaccine. Ref: Park, Edition 21, Page - 185