. Animal parasites and human disease. Parasites; Medical parasitology; Insects as carriers of disease. SPARGANUM PROLIFERUM 253 other Japanese cases, discovered in 1907 and 1911 respectively, have also been reported. In one of these the worms, most but not all of them in capsules, were found in countless numbers not only in the subcutaneous tissue but also in the muscles and through- out most of the internal organs, including even the brain. The worms of this species (Fig. 99) are in all cases white, flat- tened organisms of very variable shape and size. They usually vary from three mm. to 12
. Animal parasites and human disease. Parasites; Medical parasitology; Insects as carriers of disease. SPARGANUM PROLIFERUM 253 other Japanese cases, discovered in 1907 and 1911 respectively, have also been reported. In one of these the worms, most but not all of them in capsules, were found in countless numbers not only in the subcutaneous tissue but also in the muscles and through- out most of the internal organs, including even the brain. The worms of this species (Fig. 99) are in all cases white, flat- tened organisms of very variable shape and size. They usually vary from three mm. to 12 mm. (| to \ an inch) in length, and from mm. to mm. (§5 to 15 of an inch) in width, but in one Japanese case they were uniformly larger, reaching a length of three inches. Their peculiarly irregular shape is due to the unique method of proliferation by the growth of buds or super- numerary heads. These apparently become detached, leave the cyst, and become encapsuled themselves after migrating in the subcutaneous tissue. This explains the increasing num- bers of acne-like spots or nodules containing worms, which were re- ported by the patients. Attempts made by Ijima to pro- duce adult worms by feeding the larvae to various domestic animals failed, and nothing is known of the life history or mode of infection be- yond a suspicion that the eating of raw fish is responsible for it. Dr. ^ . , ,. i ji -m •i Fig. 99. Sparganum proliferum, Gates, who discovered the Florida from man in Fiorida. Much en- case, reported that there was probably larged. (After Stiles.) a similar case in Florida a few years before, the patient having moved to California where he died "eaten up with ; The rare occurrence of this peculiar and serious parasitic disease is evidence that the mode of infection is unusual. The suspicion that it results from eating raw fish is sufficient reason for discrim- ination against ^his kind of food even in places where this or other human para s
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
