Table 3. Detection of CRISPR1-cas1 in E. hirae strains, by source of isolate.

Differences between sources are not significant, P value = 0.3302.

Source	cas1-positive	No. of isolates	% cas1 positives
Activated sludge	29	39	74.4
Environmental samples	16	25	64.0
Animal fecal	12	14	85.7