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Studies on the Aetiology, Epidemiology and Pathology of Paragonimus Infection in Fujian

Author: TuLi
Tutor: LinYuGuang
School: Xiamen University
Course: Zoology
Keywords: Paragonimiasis Etiology Epidemiology Pathology Life history
CLC: R532.2
Type: PhD thesis
Year: 2002
Downloads: 59
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Abstract

First, this paper made a detailed examination of Fujian has reported six paragonimiasis pathogen biology, especially adults, eggs and development, as well as identification of the asexual stages of the life history of Wei's and Sri Lanka's two kinds of pathogenic protozoon species characteristics and gave a detailed description of the drawing and photo control. Found in Fujian flat sac paragonimiasis and Paragonimus adult morphology of the Guardian's their sac larva detailed comparison of the structure is both adult body size, proportion of parasites length and width, testicular morphology, as well as the mouth the sucker is greater than or equal to the size of the ventral sucker, with a solitary body spines ovarian centrosome ovaries no two branches of the main distinguishing feature is basically the same, there is no significant difference, so that the two are the same insect species (by international nomenclature) flat sac paragonimiasis should be the Guardian's paragonimiasis the synonym. Three of Fujian, Guangdong, Hubei and other places we Steinmann paragonimiasis adult specimens, as well as the life history of parasites and Sichuan report of Sichuan Paragonimiasis adults asexual stages of the life history and Hunan reported in conjunction paragonimiasis asexual stages of adult life history, and other detailed morphological comparison, both in adults proved Steinmann, Sichuan, and in conjunction with the three paragonimiasis Body, aspect ratio, diet sucker size and location, the basic body spines solitary type, ovarian body significantly and the main distinguishing feature of the two or three branches of the testicular morphology consistent, no significant differences in the life history of each of the eggs the size of mother Ray larva, son Ray larva belong to short the original intestinal type, cercariae short-tailed metacercarial size and morphology of the first intermediate host with the proposed snails class, as well as human cases of the three different endemic areas are migratory subcutaneous nodules as the main clinical symptoms, sputum and negative fecal characteristics are basically the same, so we think Steinmann, Sichuan, in conjunction with the three paragonimiasis same insect species, Sichuan and in conjunction with paragonimiasis for the the Steinmann paragonimiasis same synonym. Fourth, three Pingzheng paragonimiasis life history has not yet been fully elucidated. Liu Cheng (1981) Romantic and Uncontrolled semisulcatus curled paragonimiasis endemic area in Shao Wu Weishi body check to a similar Paragonimus cercariae, but special of its excretion sac morphology, they intended this is three Pingzheng Paragonimus cercariae and whereby Romantic and Uncontrolled short ditch curled the three Pingzheng paragonimiasis first intermediate host. In this paper, the problems left over from history, the three Pingzheng paragonimiasis made a preliminary study of its life history. Newborn and juvenile Romantic and Uncontrolled infection through a lot of hair bend artificial experiment of 5 semisulcatus cricket, while in three Pingzheng paragonimiasis endemic areas, a large number of Romantic and Uncontrolled semisulcatus autopsy aging wax, the results have proved Romantic and Uncontrolled semisulcatus Basking not flat positive Paragonimus asked the host, to clarify a previous error reported. Fifth, this study highly endemic areas in of the Zhangping City goats Court Village Pingzheng Paragonimus epidemiology 'visits, three freshwater crab local natural infection three Pingzheng sac cricket, one of the freshwater crab by experts as a new species, named a new species of goat Court South China Sea crabs (Nan \is sac butterfly, which is the highest record. In addition, the top floor of the village in Pinghe found a 'Sinopotamon identified by experts as a new species, named for calm Sinopotamon (nOp the-m npi ... Chau Chau blood s Sp.n.). The capsular bend three Pingzheng natural infection rate of 29.9%. Sixth, a summary of the conclusions and discussions. Fujian paragonimiasis epidemiology Wei's and Sri Lanka's two kinds of lung fluke is the most important pathogen in the province. The Guardian's Paragonimiasis wide distribution area, and 34 counties. The Steinmann paragonimiasis distribution are 15 counties and cities, and was scattered distribution. The construction turns County the the Steinmann paragonimiasis serious epidemic area, up to 249 cases from 1970 to 1975, the county hospital diagnosed cases and migratory subcutaneous nodules as the main clinical symptoms. Romantic and Uncontrolled semisulcatus wax widely distributed in large quantities, is the province Methodist's the paragonimiasis the first intermediate host. Fujian intends snails and build turns pseudo adzuki bean snail is the intermediate host of Paragonimus Steinmann. Fuqing Down's snails is the the Fujian paragonimiasis first intermediate host. Have to three kinds the Nanhai o River Crab, four Sinopotamon and a Chinese tunic crab as the province paragonimiasis second intermediate host, goat Court South China Sea crabs peace and Sinopotamon In this study, the newly discovered freshwater crab. Popular District People's raw food and half eating crabs, is the main route of infection paragonimiasis.

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