Table 3.

Bacterial culture results from 4 horses with septic fibrinous pericarditis referred to the Western College of Veterinary Medicine, University of Saskatchewan, between June and September 2017, following an environmental infestation with forest tent caterpillars.

	Sample	Bacteria isolated
Case 1	Necropsy: Liver, lung, pericardium	Enterococcus faecalis, Escherichia coli
Case 2	On presentation: Pericardiocentesis	Negative
	Necropsy: Liver, pericardium	Escherichia coli
	Necropsy: Pericardium	Actinobacillus suis
Case 3	On presentation: Pericardiocentesis	Actinobacillus suis, Actinobacillus equuli
	Necropsy: pericardial and pleural fluid	Negative (post treatment with antimicrobials)
Case 4	On presentation: Pericardiocentesis following euthanasia	Negative
	Necropsy: Pericardium	Actinobacillus suis, Escherichia coli