Polyserositis and meningitis associated with Escherichia coli infection in piglets.

Two piglets which had a history of anorexia and weakness were examined pre and postmortem. Other piglets in the same herd had died within 24 hours of the onset of similar signs. The two piglets examined had a fibrinous polyserositis. Grossly, the pleura, peritoneum and joints were affected and an acute meningitis was noted on microscopic examination of the brains. Pure cultures of Escherichia coli were recovered from all but one of the organs and exudates cultured.