The Animal Parasites of ManFantham, Harold Benjamin
Science
The Animal Parasites of Man
Fantham, Harold Benjamin
Medical parasitology
[176] For an account of the life-cycle of _Eimeria stiedæ_ consult
Wasielewski, Th. von (1904), “Studien und Photogramme zur Kenntnis der
pathogenen Protozoen,” Heft. 1 (Coccidia), 118 pp., 7 plates, Leipzig:
J. A. Barth. Also, Metzner, R. (1903), _Arch. f. Protistenk._, ii,
p. 13.
Young rabbits often die of intestinal coccidiosis before infection of
the liver occurs. The repeated schizogony of _Eimeria stiedæ_ in the
gut is sufficient to cause death.
[Illustration: FIG. 74.--_Eimeria stiedæ_. Section through coccidian
nodule in infected rabbit’s liver. × 55.]
The disease of cattle popularly known as “red dysentery” is also
ascribed to the action of _Eimeria stiedæ_. The fæces of infected
cattle show blood clots of various sizes and in severe cases watery
diarrhœa is present. Acute cases end fatally in about two days.
Numerous oöcysts, considered to be those of _Eimeria stiedæ_, occur
in the fæces, and there is a heavy infection of the gut, especially
the large intestine and rectum, all stages of the parasite being
found in the epithelium. It is suspected that cattle contract the
disease by feeding on fresh grass contaminated with oöcysts. The
disease is recorded from Switzerland and from East Africa.
As before mentioned, _Eimeria stiedæ_ is considered to be the
organism found in a few cases in man, possibly acquired by eating the
insufficiently cooked livers of diseased rabbits. These cases may now
be described.
(_a_) *Human Hepatic Coccidiosis.*
(1) Gubler’s Case. A stone-breaker, aged 45, was admitted to a Paris
hospital suffering from digestive disturbances and severe anæmia.
On examination the liver was found to be enlarged and presented a
prominent swelling, which was regarded as being due to Echinococcus.
At the autopsy of the man, who succumbed to intercurrent peritonitis,
twenty cysts were found averaging 2 to 3 cm. in diameter, and one
measuring 12 to 15 cm. The caseous contents consisted of detritus,
pus corpuscles, and oval-shelled formations, which were considered to
be Distoma eggs, but which, in accordance with Leuckart’s conjecture,
proved to be Coccidia.[177]
[177] Gubler, A., “Tumeurs du foie déterm. par des œufs d’helm....”
_Mem. Soc. Biol._, Paris, 1858, v, 2; and _Gaz. med. de Paris_, 1858,
p. 657; Leuckart, R., _Die menschl. Paras._, 1863, 1ST edition, i,
pp. 49, 740.
(2) Dressler’s Case (Prague). Relates to three cysts, varying from
the size of a hemp-seed to that of a pea, and containing Coccidia,
found in a man’s liver.[178]
[178] Leuckart, R., _Die menschl. Paras._, 1863, 1st edition, i, p. 740.
(3) Sattler’s Case (Vienna). Coccidia were in this case observed in
the dilated biliary duct of a human liver.[179]
[179] Leuckart, R., _Die Paras. d. mensch._, 1879, 2nd edition, p. 281.
(4) Perls’ Case (Giessen). Perls discovered Coccidia in an old
preparation of Sömmering’s agglomerations.[180]
[180] Leuckart, R., _ibid._, p. 282.
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