1921
Volume 79, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

We studied 1,179 North American travelers who visited Mexico from 2005 to 2007. Travelers’ diarrhea (TD) was reported by 521 (44%) participants. Among subjects with TD, 218 cases were examined for cryptosporidiosis by polymerase chain reaction (PCR) and enzyme-linked immunoassays (ELISA). There were 14 (6%) cases of cryptosporidiosis and 141 cases (64%) of bacterial diarrhea. Compared with bacterial diarrhea, a longer stay in Mexico was a risk factor for cryptosporidiosis. Additionally, cases passed greater number of watery stools ( < 0.05), suffered more episodes of diarrhea ( ≤ 0.05), and were more likely to experience tenesmus ( ≤ 0.05) compared with bacterial causes of TD. ELISA detected seven (3%) cases of , whereas PCR identified an additional seven cases (6%). Speciation by 18SrRNA sequencing showed that 13 cases were caused by and only 1 case was caused by . ELISA showed a sensitivity of 50% and specificity of 100% compared with PCR.

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  • Received : 05 Nov 2007
  • Accepted : 30 May 2008

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