Identification of the human paragonimiasis causative agent in Lao People's Democratic Republic.

To assess the species of human paragonimiasis in Lao People's Democratic Republic, 6 ovum samples from 6 native confirmed paragonimiasis patients were examined with polymerase chain reaction (PCR) amplifying the internal transcribed spacer 2 (ITS2). The PCR products were sequenced, and a homology search was performed using the GenBank. All 6 sequences were identical with Paragonimus heterotremus ITS2. Our work suggests that P. heterotremus may be the main etiological agent of human paragonimiasis in this locality.