Omar O. Barriga (oobarrig at pop.service.ohio-state.edu) wrote:
>Blastocystis is not a pathogenic organism.
This is far from being a settled issue. I would estimate that there
are about an equal numbers of paper in the literature that say it is
a pathogen as papers that say it is not. It may not cause invasive or
fatal disease but that does not mean it is a commensal. It is also
clear from the recent literature that human Blastocystis is actually
two or more distinct organisms - this may in part explain the variable
results being reported with respect to its role as a pathogen.
C. Graham Clark, Ph.D.
Department of Medical Parasitology,
London School of Hygiene and Tropical Medicine,
Keppel Street, London WC1E 7HT, England, G.B.
e-mail: g.clark at lshtm.ac.uk