Table 2.

Questionnaire responses given by participants that were either deemed negative for infection using the diagnostic 18S real-time polymerase chain reaction or that had positive infection status (single infection with Giardia duodenalis assemblage A, single infection with G. duodenalis assemblage B, or mixed infection with both G. duodenalis assemblages A and B) identified (N = 289)

Question	Responded yes	Responded no
Do you currently have abdominal (stomach) pain?	128 (44%)	161 (56%)
Do you currently have loose stool (diarrhea)?	92 (32%)	197 (68%)