A spherical acid-fast organism measuring similar to 10 mu m in diamete
r (Cyclospora sp.) has recently been implicated in diarrheal diseases
in many parts of the world. We detected this organism in the stools of
six Bangladeshi patients with diarrhea. Four patients had chronic dia
rrhea and two had acute diarrhea at the time of presentation. This is
the first report of infection with this organism in the indigenous pop
ulation from this region.