 INTESTINAL PARASITES (Helminths) 
CESTOIDEA Order: Pseudophyllidea
DIPHYLLOBOTHRIUM LATUM
dyp1-ic
Diphyllobothrium latum :
world-wide distribution with a higher prevalence
in northern emisphere where raw fish is eaten: Alaska, Canada,
Russian Federation, baltic countries, scandinavian region.
The adult worm may reach 15 meters in lenght.
Life cycle.
dyp2-ic
Diphyllobothrium latum : eggs are
operculated, measure 58-75 by 40-50 µm.
A small knob is visible at the opposite site of the operculum.
dyp3-ic
Diphyllobothrium latum :
operculum of the cestode egg, detail.
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Diphyllobothrium1-ic |
Diphyllobothrium latum :
Egg from the fish tapeworm in stool.
Elliptic egg with a thin shell. The operculum is at the right
(Unstained).
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Diphyllobothrium2-ic |
Diphyllobothrium latum :
Egg from the fish tapeworm in stool. The operculum at the top was forced
open by pressure on the coverglass.
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Diphyllobothrium3-ic |
Diphyllobothrium4-ic |
Diphyllobothrium latum :
The mature proglottid is somewhat broader than long,
and is ivory colored.
Diphyllobothrium1-ic,
2-ic,3-ic and 4-ic:
Courtesy of Dr. Marc Lontie:
Director of the laboratory of
the Medisch Centrum voor Huisartsen,
Maria Theresiastraat 63a; B-3000 Leuven, Belgium.
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Brief update on
Diphyllobothriasis sp. infections in Russia
Prof. A.M. Bronstein
Ph.D., D.Sc,
Prof. N. A.Malishev
Ph.D., D. Sc., Prof. V.I.
Luchshev Ph.D., D. Sc,
dr. L.V.Alautdina
Prof. Dr A.M.Bronstein, Ph.D., D.Sc.,
Municipial Department of Paras. Dis, Hospital of Infectious
Diseases N 1; Clinical Department of the Marts.Inst.Med.Paras.&
Trop.Med 123367 Moscow, Volocolamscoye sh., 63 Russia
Prof. Dr N.A. Malishev, Ph.D., D.
Sc. Hospital of Infectious Diseases N 1
Prof. Dr V.I.Luchshev, Ph.D., D.
Sc. Department of Infectious Diseases, Tropical Medicine &
Epidemiology Russian Medical University, 117869 Moscow,
Ostrovityaninov Str., 1, Russia
Dr. L.V.Alautdina
West Regional
Center of Epidemiological Surveillance, 121309 Moscow,
Philevskaya, 33, Russia
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