Phylogeographical studies of Ascaris spp. based on ribosomal and mitochondrial DNA sequences.

ABSTRACT:

Background

The taxonomic distinctiveness of Ascaris lumbricoides and A. suum, two of the world's most significant nematodes, still represents a much-debated scientific issue. Previous studies have described two different scenarios in transmission patterns, explained by two hypotheses: (1) separated host-specific transmission cycles in highly endemic regions, (2) a single pool of infection shared by humans and pigs in non-endemic regions. Recently, A. suum has been suggested as an important cause of human ascariasis in endemic areas such as China, where cross-infections and hybridization have also been reported. The main aims of the present study were to investigate the molecular epidemiology of human and pig Ascaris from non-endemic regions and, with reference to existing data, to

SUBMITTER: Cavallero S 

PROVIDER: S-EPMC3623706 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature