There are various genera of taeniasis but in Vietnam Taenia saginata, Taenia solium and Taenia asiatica. Among them, only Taenia solium is currently identified as the cause of cysticercosis. Taeniasis and certicercosis are distributed largely. The incidence of taeniasis is 0.5-12.6%. Certicercosis is occured at least in 49 provinces and cities in whole of the country, with the incidence of 5.7% in Bac Ninh and 19.7% in Ho Chi Minh city. These conditions affect considerably on community health. In local health services, the treatment of cysticercosis is now difficult. At basic level the collaboration of health services and veterinary health is recommended in the control of tamiasis and certicercosis
Taeniasis ; Cysticercosis ; Humans ; epidemiology

Background: There are limited reports on foodborne trematodiases (FBT) and taeniasis prevalence and distribution in the Philippines. Objective: This study aimed to describe their prevalence and distribution and determine the species causing these infections in selected areas in southern Philippines. Methodology: The study was implemented in selected barangays in Caraga and Davao regions in southern Philippines. School-age children and adults with gastrointestinal manifestations within the last two weeks were examined using the modified Kato thick technique, while adults with cough for more than two weeks underwent sputum examination using NaOH concentration technique. The adult helminths from patients positive for FBT and/or taeniasis were processed, mounted, and stained for species identification. Results: Variable FBT and taeniasis prevalence across geographic areas and population groups was seen with a highly focal distribution. Heterophyidiasis was the most common FBT with a 7.5% (168 out of 2,238) prevalence. Species not known to be endemic in the area were identified including Haplorchis taichui, Opisthorchis felineus, and Echinostoma ilocanum. Variable prevalence of soil-transmitted helminthiasis and schistosomiasis was also seen. Conclusion The study revealed the hidden burden of FBT and taeniasis and identified species not known to be endemic in selected areas in southern Philippines. Addressing this hidden burden will require enhancing service delivery. This may be done by utilizing more accurate diagnosis, updating treatment guidelines, implementing evidence-based control interventions, and improving surveillance. Integrating control programs, for instance, integrating FBT and taeniasis control with STH and schistosomiasis control, and integrating paragonimiasis control with the national TB program, may also help in optimizing resources.
Taeniasis ; Schistosomiasis ; Philippines

Cysticercosis, a parasitic disease caused by Taenia solium metacestode (TsM), has a major global public health impact in terms of disability-adjusted life years. The parasite preferentially infects subcutaneous tissue, but may invade the central nervous system, resulting in neurocysticercosis (NC). NC is an important neglected tropical disease and an emerging disease in industrialized countries due to immigration from endemic areas. The prevalence of taeniasis in Korea declined from 0.3%–12.7% during the 1970s to below 0.02% since the 2000s. A survey conducted from 1993 to 2006 revealed that the percentage of tested samples with high levels of specific anti-TsM antibody declined from 8.3% to 2.2%, suggesting the continuing occurrence of NC in Korea. Modern imaging modalities have substantially improved the diagnostic accuracy of NC, and recent advances in the molecular biochemical characterization of the TsM cyst fluid proteome also significantly strengthened NC serodiagnosis. Two glycoproteins of 150 and 120 kDa that induce strong antibody responses against sera from patients with active-stage NC have been elucidated. The 150 kDa protein showed hydrophobic-ligand binding activities and might be critically involved in the acquisition of host-derived lipid molecules. Fasciclin and endophilin B1, both of which play roles in the homeostatic functions of TsM, showed fairly high antibody responses against calcified NC cases. NC is now controllable and manageable. Further studies should focus on controlling late-onset intractable seizures and serological diagnosis of NC patients infected with few worms. This article briefly overviews diagnostic approaches and discusses current issues relating to NC serodiagnosis.
Antibody Formation ; Central Nervous System ; Cyst Fluid ; Cysticercosis ; Developed Countries ; Diagnosis ; Emigration and Immigration ; Glycoproteins ; Humans ; Immunologic Tests ; Korea ; Neurocysticercosis ; Parasites ; Parasitic Diseases ; Prevalence ; Proteome ; Public Health ; Republic of Korea ; Seizures ; Serologic Tests ; Subcutaneous Tissue ; Taenia solium ; Taenia ; Taeniasis

The prevalence of human taeniasis has decreased in Korea. The stool egg positive proportion decreased from 1.9% in 1971 to 0% in 2004 in nationwide surveys. The neurocysticercosis (NCC) is also presumed to decrease. However, detailed information regarding the recent status of NCC in Korea is lacking. We retrospectively reviewed NCC cases from 1990 to 2016 at Asan Medical Center, a 2700-bed tertiary referral hospital in Korea. We identified patients based on clinical symptoms, brain imaging, pathology and serological assay. The cases were classified as parenchymal, extraparenchymal, and mixed NCC. Eighty-one patients were included in the analysis. The mean age was 54.5 years, and 79.0% were male. The number of NCC cases was highest from 1995 to 1999, and continuously decreased thereafter. Forty (49.4%) patients had parenchymal NCC, while 25 (30.9%) patients had extraparenchymal NCC, and 16 (19.8%) patients had mixed NCC. The seizure and headache were most common symptom of parenchymal NCC and extraparenchymal NCC respectively. Hydrocephalus was more common in extraparenchymal NCC, and patients with extraparenchymal NCC were more likely to require a ventriculoperitoneal shunt. Cases of NCC are decreasing accordingly with human taeniasis and lesion location was the most important determinant of clinical presentation and outcome of NCC in Korea.
Chungcheongnam-do ; Headache ; Humans ; Hydrocephalus ; Korea ; Male ; Neurocysticercosis ; Neuroimaging ; Ovum ; Pathology ; Prevalence ; Retrospective Studies ; Seizures ; Taenia solium ; Taeniasis ; Tertiary Care Centers ; Ventriculoperitoneal Shunt

BACKGROUND: Tissue biopsy is of significant importance to the parasitic diseases. This report describes in order to know the species and frequency of human parasitic infection diagnosed by biopsy at the department of anatomical pathology, KyungHee Medical Center. Finally, we estimated the trend of parasitic diseases of tissue in a feature, in Korea. METHOD: 262(0.57%) cases of parasitic infection were reviewed for analysis of the different types of parasitic infection, 45,651 biopsied materials were submitted for routine histopathological examination during a period of 12 years from 1972 to 1983 at the department of anatomical pathology, KyungHee Medical Center. RESULTS: They consisted of 136 cases of cysticercosis, 73 clonorchiasis, 16 amebiasis, 12 paragonimiasis, 9 ascariasis, 9 sparganosis, 4 scabies, 1 taeniasis, 1 enterobiasis and 1 anisakiasis. 136 cases of cysticercosis were mainly of the skeletal muscle and subcutaneous tissue. The 73 cases of clonorchiasis occurred mainly in the liver and gallbladder. In the 16 cases of amebiasis, the liver and the rectum were the main loci. In 12 cases of paragonimiasis, pleura was the main site. CONCLUSION: The frequency of parasitic infections found in biopsied specimens was found to decrease as the years passed by, but some disease such as sparganosis showed a possible increase. Tissue biopsy is an important method for detection of tissue or ectopic parasitic infections.
Amebiasis ; Anisakiasis ; Ascariasis ; Biopsy* ; Clonorchiasis ; Cysticercosis ; Enterobiasis ; Gallbladder ; Humans ; Incidence ; Korea ; Liver ; Muscle, Skeletal ; Paragonimiasis ; Parasitic Diseases* ; Pathology ; Pleura ; Rectum ; Scabies ; Sparganosis ; Subcutaneous Tissue ; Taeniasis

Status and emerging issues in the use of praziquantel for treatment of human trematode and cestode infections are briefly reviewed. Since praziquantel was first introduced as a broadspectrum anthelmintic in 1975, innumerable articles describing its successful use in the treatment of the majority of human-infecting trematodes and cestodes have been published. The target trematode and cestode diseases include schistosomiasis, clonorchiasis and opisthorchiasis, paragonimiasis, heterophyidiasis, echinostomiasis, fasciolopsiasis, neodiplostomiasis, gymnophalloidiasis, taeniases, diphyllobothriasis, hymenolepiasis, and cysticercosis. However, Fasciola hepatica and Fasciola gigantica infections are refractory to praziquantel, for which triclabendazole, an alternative drug, is necessary. In addition, larval cestode infections, particularly hydatid disease and sparganosis, are not successfully treated by praziquantel. The precise mechanism of action of praziquantel is still poorly understood. There are also emerging problems with praziquantel treatment, which include the appearance of drug resistance in the treatment of Schistosoma mansoni and possibly Schistosoma japonicum, along with allergic or hypersensitivity reactions against praziquantel treatment. To cope with and overcome these problems, combined use of drugs, i.e., praziquantel and other newly introduced compounds such as triclabendazole, artemisinins, and tribendimidine, is being tried.
Artemisinins ; Benzimidazoles ; Cestoda ; Cestode Infections ; Clonorchiasis ; Cysticercosis ; Diphyllobothriasis ; Drug Resistance ; Echinostomiasis ; Fasciola ; Fasciola hepatica ; Humans ; Hymenolepiasis ; Hypersensitivity ; Opisthorchiasis ; Paragonimiasis ; Phenylenediamines ; Phosphatidylethanolamines ; Praziquantel ; Schistosoma japonicum ; Schistosoma mansoni ; Schistosomiasis ; Sparganosis ; Taenia ; Taeniasis ; Trematode Infections

A 77-year old man living in Kyunggi-Do, Korea was surgically treated at Seoul National University Hospital on April 1981, because of acute abdomen. At laparotomy, a 1.77m long adult Taenia saginata was found both in gallbladder and in common bile duct to cause acute gangrenous cholecystitis. The relevant literature were reviewed and possible mechanisms of the disease were discussed.
parasitology-helminth-cestoda ; Taenia saginata-taeniasis ; case report ; gallbladder ; common bile duct ; acute abdomen ; laparatomy

Previous paleoparasitological studies of Joseon specimens established that the prevalence of Taenia infection was not much different from that of the early 20th century Korean population. As many of taeniases originally diagnosed as Taenia saginata in South Korea were revealed to be actually Taenia asiatica, which share a common intermediate host with T. solium (the pig), Joseon people must have ingested raw pork frequently. However, the current examination of extant Joseon documents revealed that the population ate significant amounts of beef even if the beef ban was enforced; and pork was not consumed as much as we thought. Considering the meat consumption pattern at that time, Joseon people should have been infected by T. saginata more frequently than T. asiatica. This may suggest a low prevalence of T. saginata metacestodes in cattle compared to that of T. asiatica metacestodes in pigs, possibly due to the traditional way of rearing pigs (using human feces). This letter gives us a chance to reconsider the existing preconception about parasitic infections in Korean history though we are still hard to accurately estimate the historical patterns of taeniases at this stage.
Animals ; Cattle ; Humans ; Korea* ; Meat* ; Population ; Prevalence ; Red Meat ; Swine ; Taenia saginata ; Taenia solium ; Taenia* ; Taeniasis*

Three species of tapeworms infect humans in their adult stage (Taenia solium, Taenia saginata and Taenia asiatica). The 3 are flat, opaque white or yellowish, and exceptional long segmented parasites, measuring 1 to 12 m in their adult stage. In this review, the development of the knowledge regarding the first species, mainly focused on understanding how the larval stage or cysticercus is transmitted to humans, is described. The second species is a cosmopolitan parasite that only causes taeniosis and not cysticercosis; therefore, it will not be included. Information on the third species, which is presently being produced, since this species was recognized as such only at the end of the 20th century, will be discussed at the end of this review.
Animals ; Biomedical Research/trends ; Humans ; Life Cycle Stages ; Taenia/*pathogenicity/physiology ; Taeniasis/*parasitology/transmission

This mini-review describes recent epidemiological trends in cysticercosis and taeniasis in Japan. Some of the topics discussed herein were presented at the first symposium on "Current perspectives of Taenia asiatica researches", that was held in Osong in Chungbuk Province, South Korea, in October 2011 and organized by Prof. K. S. Eom, Chungbuk National University School of Medicine. To better understand the trends in the occurrence of cysticercosis and taeniasis in Japan, clinical cases reported in 2005 have been updated. In addition, the current status of Taenia asiatica infections successively occurring in Japan since 2010 is also discussed.
Animals ; Humans ; Incidence ; Japan/epidemiology ; Prevalence ; Taenia/*isolation & purification ; Taeniasis/*epidemiology