Table 1. Percent of ELISA sero-reactive canine serum samples by eco-region in the state of Texas.

Eco-Region	Sero-reactive Samples*	Percentage (%)
East Central Texas Plains	21⌘	28.77
South Texas Plains	12⌘	16.44
Texas Black Prairie	10⌘	13.70
Cross-Timbers	10	13.70
Western Gulf Coastal Plains	9⌘	12.32
South Central	7	9.59
Others^	4	5.48
Total	73	100%

* Samples were considered sero-reactive by ELISA test using the rGlpQ antigen.

^⌘ Eco-regions with cases positive by immunoblot.

^ Includes eco-regions with only 1 sero-reactive sample (High Plains, South Plains, Edwards Plateau and Central Great Plains).