Format

Send to

Choose Destination
Jpn J Infect Dis. 2010 Nov;63(6):447-8.

Ascariasis in Japan: is pig-derived Ascaris infecting humans?

Author information

1
Department of Medical Zoology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan. arizonon@koto.kpu-m.ac.jp

Abstract

Human ascariasis is caused by infection with the common roundworm Ascaris lumbricoides, although the pig roundworm Ascaris suum has also been reported to infect humans and develop into the adult stage. To elucidate whether pig-derived Ascaris infects humans in Japan, 9 Ascaris isolates obtained from Japanese patients and a further 9 Ascaris isolates of pig origin were analyzed to determine their internal transcribed spacer-1 sequences. Six of the 9 clinical isolates showed the Ascaris genotype which predominantly infects humans in endemic countries, while the other 3 clinical isolates and 9 pig-derived isolates showed the genotype predominant in pigs worldwide. These results suggest that at least some cases of human ascariasis in Japan are a result of infection with pig-derived Ascaris.

PMID:
21099099
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for National Institute of Infectious Diseases
Loading ...
Support Center