TABLE 5.

PCR results for dog blood taken in 1997

Organism	19 May		6 September		19 May or 6 September
	No. of dogs tested	% Positivea	No. of dogs tested	% Positivea	No. of dogs tested	% Positivea
E. canis	24	38	20	50	27	56
E. chaffeensis	24	38	21	0	27	33
E. ewingii	24	33	21	0	27	30
E. equi	24	8	21	5	27	11
E. platys	24	13	21	29	27	33
B. canis	24	17	21	14	27	26
Rickettsia spp.	24	63	21	43	27	74
Bartonella spp.	24	75	0	NAb	24	75

^aPercentage of blood containing DNA of the organism indicated. 

^bNA, not available.