Attempts to Find Poliomyelitis Virus in Fish. *

Abstract

Each year since 1932 we have searched in vain for poliomyelitis virus in the gastrointestinal contents of fish caught in waters near epidemic areas with consistently negative results. There might have been several reasons for our failures. (1) the gastrointestinal contents used in our experiments could not always be rendered completely sterile and the pyogenic infection which usually followed intracerebral injections at that time may have overshadowed any effects from the virus that might have been present.