Experimental Aerosol Inoculation and Investigation of Potential Lateral Transmission of Mycobacterium bovis in Virginia Opossum (Didelphis virginiana)

Table 1

Mycobacterium bovis culture group results. The column to the left indicates the opossum group as M. bovis inoculated, exposed, or control. The first row indicates the four pools that were created for culture. Pool A: cranial lymph nodes and tonsil, Pool B: thoracic lymph nodes, Pool C: liver, kidney, spleen, and abdominal lymph nodes, and Pool D: small intestine and large intestine. The body of the table is split into boxes indicating the positive (Pos) and negative (Neg) M. bovis culture results.

Inoculation group	Pool A upper respiratory		Pool B lower respiratory		Pool C systemic		Pool D alimentary
	Pos	Neg	Pos	Neg	Pos	Neg	Pos	Neg
Inoculated	0	4	4	4	2	4	0	4
Exposed	0	4	0	4	0	4	0	4
Controls	0	4	0	4	0	4	0	4