The cello-tape anal swab specimens from 936 primary school children in Seoul, 308 primary school children in a rural area and 92 children in Nanjido, were examined for Enterobius vermicularis eggs. Out of 936 specimens from a primary school in Seoul, E. vermicularis eggs were detected in 114 specimens, the egg detection rate being 12.2 percent. In 308 specimens from a primary school in a rural area, 77 (25.0 percent) were positive for E. vermicularis eggs. Among 92 specimens from Nanjido children in Seoul, egg positive rate of E. vermicularis was 28.3 percent. The egg detection rate of primary school children in Seoul was significantly lower than that of primary school children in a rural area and of Nanjido children. The egg detection rate in boys was lower than that of girls. As the age of children increased, the egg detection rate decreased.
parasitolgy-helminth-nematoda ; Enterobius vermicularis ; egg ; epidemiology

This report deals with an imported case of calabar swelling suspective of loiasis, who had been in Nigeria, Africa for 2 years. This 33-year-old Korean technician was admitted to Severance Hospital, Yonsei University Medical Center, because of erythematous swellings on left hand and foot. His peripheral blood showed persistent eosinophilia (over 30 percent of WBC), increased IgE(1,000 unit/ml) and significantly high antifilarial antibody titer with enzyme immunoassay, although no microfilaria was detected on the peripheral blood films. Under the impression of Loa loa infection diethylcarbamazine was administered for a month. Four months later mobile swellings and eosinophilia disappeared, and anti-filarial antibody titers were normalized. It is assumed that the patient had suffered from Loa loa infection, which is the first report on loiasis in Korea.
parasitolgy-helminth-nematoda ; Loa loa ; loiasis ; case report ; Nigeria ; imported disease

This study was performed to observe histopathological changes and serological reactions in chronic anisakiasis of rabbits. Each rabbit was infected per os with 30 larvae of Anisakis type I. Their sera were collected chronologically and the rabbits were killed for histopathological examination, 3, 13, 20, 30, 60, 90 and 150 days after the infection. The results were summarized as below. Most of the larvae were recovered from the stomach, but a few from the omentum, intestine, mesentery and abdominal wall. The recovery rates and distribution of worms by organ were not differed by duration of infection. Histologically the lesion was abscess type on 13 days, i.e., the dead worms were surrounded by fibrinous exudate, histiocytes and thick zone of numerous inflammatory cells. After 30 days, histiocytes were found to invade the worms and the lesion was changing into abscess-granulomatous type. Also a calcified worm was found on the 30th day. After then the worms were observed to be dissolved slowly until 90 days. On 150 day, only one calcified worm was observed. The levels of serum IgG antibody by ELISA reached their maximum 30 days after the infection. After then, it decreased slowly until 150 days after the infection. Above serological and histopathological findings indicated that antigenic stimulation from degenerating Anisakis larvae was the greatest during the first 30 days after infection. This period was corresponding with the beginning of worm resolution or calcification. Serologic test by ELISA would be a valuable tool for confirming chronic anisakiasis.
parasitolgy-helminth-nematoda ; Anisakis ; anisakiasis ; rabbit ; histology ; pathology ; immunology ; enzyme-linked immunosorbent assay