Conversation so far:
Did Jonas Salk want privacy?
Jonas Salk preferred not to have his career as a scientist affected by too much personal attention, as he had always tried to remain independent and private.
What did Jonas Salk do to get his privacy?
Jonas Salk talks continually about getting out of the limelight and back to his laboratory.

Question: how did it prove to be impossible?
Self-contained rewrite: How did Jonas Salk regaining his privacy prove to be impossible?