TABLE 1.

Bacteria isolated from pneumonic lungs of BHS

Region	Bacterium isolated	No. of BHSa	% Total
Hells Canyon	M. haemolytica	10	17
	B. trehalosi	27	46
	P. multocida	35	59
Total		59
Other regions	M. haemolytica	41	50
	B. trehalosi	54	66
	P. multocida	25	30
Total		82

^aSome BHS were positive for different combinations of bacterial species.