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PubMed1997

[Detection of intestinal parasites from main-land raccoon dogs, Nyctereutes procyonoides viverrinus, in southeastern Kanagawa Prefecture].

To obtain the basic data on the route of infection of intestinal parasites as zoonosis, we examined the feces from 87 main-land raccoon dogs, all of which were kept in the Yokohama Kanazawa Zoo (Kanagawa) between 1994-1996, for detection of intestinal parasites and evaluated the detection rates. Intestinal parasites were detected from 72 of the 87 raccoon dogs (82.8%). Among the parasites, Ancylostoma spp., Trichuris vulpis, Ascaridoidea and Isospora spp. were most commonly detected. Of the 72 raccoon dogs with parasites, 43 (59.7%) had mixed infection of more than two species of parasites. Since Ancylostoma spp., Ascaridoidea and Isospora spp., which are important causes of human diseases, were detected at relatively high rates, it was suggested that the raccoon dog could be a source of human infection of intestinal parasites.

Animals↗
PubMed2003

Intestinal parasitic infestations among children in an orphanage in Pathum Thani province.

Infection caused by intestinal parasites is still a common health problem especially in children from developing countries. Orphans are a group of underprivileged population in society. To evaluate the intestinal parasitic infections in children in an orphanage in Pathum Thani province, Thailand, stool samples were collected during a cross-sectional study in April 2001. Examination for intestinal parasites were performed by using simple smear, formalin-ether concentration, Boeck and Drbohlav's Locke-Egg-Serum (LES) medium culture and special staining (modified acid-fast and modified trichrome) techniques. A total of 106 pre-school orphans (60 males and 46 females), aged 10.0-82.0 months, were recruited for the study. There were 86 individuals (81.1%), 45 males and 41 females, infected with at least one parasite. Interestingly, most of the parasites identified were protozoa. Blastocystis hominis was found at the highest prevalence (45.2%). The infections caused by Giardia lamblia was 37.7 per cent and Entamoeba histolytica was 3.7 per cent. Other non-pathogenic protozoa found were Trichomonas hominis (39.6%), Entamoeba coli (18.8%), and Endolimax nana (3.7%). The only one case of helminth parasite detected was Strongyloides stercoralis (0.9%). The sensitivity for detection of B. hominis and T. hominis was increased by the LES culture technique. No history of diarrhea symptoms were recorded among these orphans. However, during the investigation, stools of all infected cases were noted for six characteristics including formed, soft, loose, mucous, loose-watery and watery. The present study emphasized the problems of protozoan infections among these orphans. Health educations as well as routine surveillance is necessary in order to control the infections.

Child↗
PubMed2006

Retrospective analysis of intestinal parasitic infections diagnosed at a University Hospital in Central, Saudi Arabia.

OBJECTIVE: To review the intestinal parasites diagnosed in a university hospital in Riyadh, Kingdom of Saudi Arabia (KSA). METHODS: This is a retrospective analysis of intestinal parasitic infections reported in patients visiting at King Khalid University Hospital (KKUH), Riyadh, KSA from 1996 to 2003. Information regarding positive cases detected during the study period was collected from the hospital records, using the Hospital Information System database of KKUH. The Statistical Package for Social Sciences was used for the statistical analysis. RESULTS: During this period, stools examination was carried out for a total of 63,892 patients, 1480 (2.3%) were positive for different intestinal parasites. Giardia lamblia was the most commonly reported parasite. The annual positivity rate for parasitic infections has decreased from 2.9-1.1%. CONCLUSION: Although this study was limited to hospital patients, comparison with previous reports indicates an overall decrease in the prevalence of intestinal infections in the study area.

Adolescent↗
PubMed1983

Excreta disposal facilities and intestinal parasitism in urban Africa: preliminary studies in Botswana, Ghana and Zambia.

The relationships between intestinal parasitism and excreta disposal technologies in Gaborone (Botswana), Ndola (Zambia) and Kumasi (Ghana) were investigated. Parasitic prevalence and intensity rates amongst groups of urban residents having similar socio-economic status and housing, but different excreta disposal technologies, were compared. In Gaborone, there was no evidence of a difference in intestinal parasitism between those using aqua privies and having access to public taps and those in identical houses enjoying flush toilets, in-house water connections and showers. In Ndola, the group with sewered aqua privies had larger houses, cleaner toilets, better water supplies, longer residence and more people in paid employment than the groups using pit latrines or communal flush toilets. Despite this, the sewered aqua privy users were not found to be different from the other groups with regard to hookworm and protozoal infection but had significantly higher Ascaris infection rates. In Kumasi, despite the differences in toilet type--from squalid communal aqua privies, through often fouled bucket latrines to well-maintained flush toilet systems--and despite also the differences in water provision, no evidence was obtained of any differences in intestinal parasitism between the groups studied. These findings suggest that the provision of superior water and sanitation facilities to a small cluster of houses, or to houses scattered through an area, may not protect those families from infection if the over-all level of faecal contamination of the environment is high. The sample sizes and response rates achieved in this study were low and follow-up studies, employing the same methodology but with larger samples, are recommended.

Adolescent↗
PubMed1993

The occurrence of human intestinal parasites in Finland.

The survey of the occurrence of intestinal parasites presented here covers 726 hospital patients, 175 healthy adults and 212 children, and 976 healthy Finnish holiday-makers prior to their trip abroad. Two faecal samples from each individual were examined. Further, 344 children were tested for Enterobius vermicularis. The total prevalence of intestinal parasites in the hospital patients was 4.2%, and that of pathogenic parasites 2.9%. The prevalence rates in healthy subjects were 4.9% and 1.5%, respectively. Three species of pathogenic parasites were found: Giardia lamblia, Entamoeba histolytica and Diphyllobothrium latum. A test for Enterobius vermicularis was positive in 5.2% of children examined.

Adolescent↗
PubMed2003

Triple Faeces Test: an effective tool for detection of intestinal parasites in routine clinical practice.

Microscopic examination of stool specimens is the cornerstone of detection of intestinal parasites in parasitology laboratories. In Europe, fresh, nonpreserved stool specimens are generally used for examination. Because intestinal parasites are shed intermittently, patients are asked to deliver multiple stool samples for examination. The limitation of this diagnostic approach is that detection of the vegetative stages of protozoa may be missed because of delays in processing and/or low compliance with the request to submit multiple stool samples. To overcome this limitation, a diagnostic test that combines multiple sampling (on 3 consecutive days), a fixative (SAF; sodium acetate acetic acid formalin), a concentration method and an easy-to-use permanent stain (chlorazol black dye) was developed for use in routine clinical practice. The results of the test, called the "Triple Faeces Test" (TFT), were compared with those of the conventional diagnostic method, i.e. ether sedimentation of a single fresh stool specimen. Stool samples from 544 patients were examined. Vials from the TFT-sets were filled by patients precisely according to instructions in 462 of 544 (85%) of the cases. Using the conventional method and the TFT, 106 and 209 patients, respectively, were diagnosed with infection by one or more parasitic species ( P<0.005). Pathogenic species were detected by the conventional method and by the TFT in 39 and 94 cases, respectively, and nonpathogenic species were detected in 124 and 288 cases, respectively ( P<0.05). Additional costs for the sampling device, laboratory reagents and handling of the TFT were acceptable. The results of this study suggest that the TFT is an effective method for detection of intestinal parasites in stool samples in routine clinical practice.

Animals↗
PubMedDate not supplied

[Intestinal parasites, haematological profile and anthropometric status of schoolchildren in Cotê d'Ivoire].

In West Africa intestinal parasites diseases and lack of food are quoted among the main causes of childhood morbidity. This study aimed to assess both the frequency and the relationships between anthropometric values and haemogramme troubles among children living in a West tropical forest area. A cross-sectional survey was tested on a sample of 262 children drawn at two levels. The parameters studied were the weight, height, age, sex, percentiles at height per age and weight per height ratios, haemogramme and intestinal parasites. The results revealed that microcyte hypochrome anemia is generally dominant in the haematological profile. The intestinal parasites carriage has a frequency higher than 68%, but has no influence on either the haematological profile or the anthropometric status. However, the haematological troubles found during that experience revealed a strong association with weight-height ratio troubles. Furthermore, malnutrition signs were observed.

Adolescent↗
PubMed2006

Prevalence of intestinal parasitic infections among school children in the central region of Thailand.

OBJECTIVE: Survey the prevalence of intestinal parasitic infections in 14 primary schools of Central Thailand. MATERIAL AND METHOD: A cross sectional survey of the prevalence of intestinal parasitic infections in 14 primary schools of Central Thailand that included Ang Thong, Ayudthaya, and Suphanburi provinces was conducted One thousand and thirty seven children with age ranging from 3-12 years (540 males and 497 females) were examined for intestinal parasites by the formalin-ether concentration technique. RESULT: The overall prevalence was 4.24%. The pathogenic parasites found were Giardia lamblia (1.25%), Enterobius vermicularis (0.19%), Trichuris trichiura and Hookworm (0.19% each), respectively. The common non-pathogenic protozoa found were Entamoeba coli (1.64%) and Endolimax nana (0.48%). The infection rate of Blastocystis hominis was 0.19%. CONCLUSION: Interestingly, the area studied which is low and flat and contains rice and water chestnut fields and small rivers, did not demonstrate Fasciolopsis buski as highly found in the past five decades. However, Parasittic infections are still public health problems in Thailand Close monitoring and control of parasitic infections is needed

Ancylostomatoidea↗
PubMedDate not supplied

Intestinal parasitic infection in operation Solomon immigrants.

Previous studies have documented a high infection rate of intestinal parasites in Ethiopian immigrants to Israel. As a result, current treatment recommendations are for mass treatment without prior screening tests. However, the group of 15,400 Ethiopian immigrants who arrived in Israel in May 1991 (Operation Solomon) represents a somewhat different population from those who had immigrated earlier. The 1991 immigrants had spent 9-12 months in Addis Ababa before their evacuation; the conditions there, together with the provision of medical care, may have resulted in lower infection rates for intestinal parasites. The purpose of this study was to determine the prevalence of intestinal parasites in these recent immigrants to assess whether mass treatment would still be appropriate. Random stool specimens were obtained from 80 residents of a population of 650 Ethiopian immigrants who were cared for at a Jerusalem clinic. Specimens were examined at the Ministry of Health Laboratory. Of the 80 specimens 45 had sufficient quantity of stool to perform the standard Richie concentration method. Pooling results from all 80 individuals revealed 60 (75.0%) positive specimens, 53 (66.3%) with at least one pathogenic parasite, and 21 (26.3%) with multiple pathogenic parasites. These data provide the first systematic information on intestinal parasitosis in immigrants from Operation Solomon and suggest that mass treatment in this group is appropriate.

Adolescent↗
PubMed2002

Status of intestinal parasites infection among primary school children in Kampongcham, Cambodia.

A survey was made to find the extent of intestinal parasite infection in Kampongcham, Cambodia in February 2002. A total of 251 fecal specimens were collected from Tonlebat primary school children and examined by formalin-ether sedimentation technique. The overall infection rate of intestinal parasite was 54.2% (males, 57.3%; females, 50.8%). The infection rate of intestinal helminths by the species were as follows: Ascaris lumbricoides 26.3%, Echinostoma sp. 15.6%, hookworm 6.4%, Opisthorchis sp. 4.0%, Rhabditis sp. 2.4%, and Trichuris trichiura 0.4%. The infection rate of intestinal protozoa were as follows: E. coli 7.6%, G. lamblia 3.2%, I. butschlii 3.2%, and E. histolytica 0.8%. More than two different kinds of parasites were found in 16.7% of the stool samples. All the children infected were treated with albendazole, praziquantel and metronidazole according to parasite species. The results showed that intestinal parasites are highly endemic in this area.

Age Factors↗
PubMed1996

The effect of chronic intestinal parasitic infection on maternal and perinatal outcome.

OBJECTIVE: The main objective of this prospective cohort study was to investigate the prevalence, risk factors and maternal-perinatal consequences of chronic asymptomatic intestinal parasitic infection during pregnancy. METHODS: Prenatal patients (n=91) attending a public clinic in Quito, Ecuador, were followed during the third trimester. Intestinal parasitic, nutritional status, sociodemographic/sanitation indicators and fetal outcome data were collected and analyzed using multivariate ANOVA and regression techniques. RESULTS: Most subjects (93%) were infected with at least one species of pathogenic intestinal parasite: 88% with Entamoeba histolytica. Greater parasite burdens were associated with poorer maternal iron status and reduced fetal growth. In particular, a high E. histolytica load was associated with decreased maternal serum hemoglobin (P=0.002) and hematocrit levels (P=0.01), iron deficiency anemia (P=0.026), and indicators of diminished intrauterine growth including a decreased ponderal index (P=0.04), mid-arm circumference (P=0.01), and mid-arm/head circumference ratio (P=0.003). CONCLUSION: Asymptomatic intestinal parasitic infection represents a hidden risk factor for maternal iron deficiency anemia and fetal growth retardation.

Adult↗
PubMed2003

[Evaluation of intervention strategy and measures on the control of intestinal parasitic infections].

OBJECTIVE: To evaluate the effect of intervention strategy and measures for intestinal parasite control in Zhejiang Province. METHODS: The protective rate (PR) and the index of effectiveness (IE) on the overall prevalence of parasites after and before interventions for intestinal parasitic infections were compared in 30 villages of 10 counties randomly selected as investigation spots. RESULTS: After the implementation of the interventions in the past decade, the total parasite prevalence declined significantly from 77.0% in 1989 to 22.84% in 1998 in the Province, the PR was 70.34%, the IE was 3.37. In each of the 10 counties, the PR was above 45%, the IE was between 1.85 and 14.47. Lavatory improvement, socioeconomic development and health education were among the first three factors that affected the effectiveness of the intervention. CONCLUSION: The comprehensive intervention combining the socioeconomic development, health education, environmental improvement with mass chemotherapy has been proved an effective strategy.

China↗
PubMed1977

A survey of intestinal parasitic infestation in Khorasan Province, Iran.

The prevalance of various intestinal parasites has been determined from a study of 40, 267 people from both urban and rural areas of Khorasan province, Iran. Except for G. lamblia, T. hominis, and H. nana, the prevalence of intestinal parasites seems to be lower in this province than in other areas of Iran. The incidence of infestation in village females was higher than in village males, but was similar in the two sexes in the towns and cities. Of those infested, more than 20% from urban areas and 35% from rural areas had multiple infestations.

Adolescent↗
PubMed2006

Epidemiology of Blastocystis hominis and other intestinal parasites in a Vietnamese female immigrant population in southern Taiwan.

There has been a rapid increase in cross-border female marriage immigrants in Taiwan. In this study, 1,434 Vietnamese female marriage immigrants arriving between July 1998 and June 2001 were examined for intestinal parasites. Most (77.9%) of these women were 20-29 years of age. The prevalence of intestinal parasite infection was 37.7%, and the trend increased from 1999 to 2001 (statistically significant, p < 0.0001), but decreased among age subgroups (p < 0.0001). Among the 20 species of intestinal parasites found in this study, 10 species (27.8%) were transmitted via the fecal-oral route, 5 (14.6%) via the soil-mediated route, and 5 (0.7%) by food-borne infection. The prevalence of blastocystosis (20.4%) and hookworm (9.7%) remained high among this population. The results provide unprecedented information on intestinal parasitic infection among these immigrants in southern Taiwan and recommend that appropriate health care be given after parasite infection is confirmed in these migrant communities.

Adult↗
PubMed2005

Intestinal parasitic infections in HIV/AIDS patients: experience at a teaching hospital in central Brazil.

In order to verify the occurrence of intestinal parasitic infections in human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) patients, 100 HIV/AIDS patients (Group 1) and 85 clinically healthy individuals (Group 2) were submitted to coproparasitological examination. Intestinal parasites were detected in 27% of patients from Group 1 and in 17.6% from Group 2. In Group 1 the most frequent parasites were Strongyloides stercoralis (12%), with 2 cases of hyperinfection; Isospora belli, 7%; Cryptosporidium sp., 4%; with 1 asymptomatic case and hookworm, 4%. Of the infected patients from Group 1 who reported to be chronic alcoholics, 64.3% had strongyloidiasis. Only 6 of the 27 infected patients from Group 1 were on highly antiretroviral therapy (HAART). In Group 2 the most frequent parasites were S. stercoralis, 7.1%; hookworm, 7.1% and Giardia lamblia, 3.5%. In conclusion, diagnosing intestinal parasites in HIV/AIDS patients is necessary especially in those who report to be chronic alcoholics or are not on antiretroviral treatment.

AIDS-Related Opportunistic Infections↗
PubMedDate not supplied

Investigation on subclinical aspects related to intestinal parasitic infections among Thai laborers in Taipei.

BACKGROUND: The migration of foreign workers from developing regions to developed countries may potentially lead to transmission of intestinal parasitic infections. In order to determine the relationship between intestinal parasitic infections and the health status of foreign workers, 302 Thai laborers brought to Taiwan were examined in this study. Nine species of parasites were found in 64.9% of laborers; Opisthorchis viverrini, hookworm, Strongyloides stercoralis, Giardia lamblia, Trichuris trichiura, Fasciolopsis buski, Taenia sp, Echinostoma sp, Entamoeba coli. METHODS: From June 1992 to December 1993, a total of 302 Thai laborers, participating in the mandatory entry health examination at Chang-Gung Memorial Hospital, Lin-Kou Medical Center were interviewed and examined. These subjects underwent a physical examination, chest roentgenography, and serological tests for human immunodeficiency virus antibody, syphilis (VDRL), and hepatitis B surface antigen. RESULTS: Among the 302 Thai laborers examined, 196 (64.9%) were found to be infected with 1 to 5 species of parasites. All 193 infected Thai laborers were treated in Taiwan. Two or 3 courses of pyrantel pamoate, mebendazole, praziquantel, and metronidazole were administered to 119, 45, 24, and 5 infected patients respectively. After 1 week of treatment, all results of stool examinations were negative. CONCLUSION: Acquisition of infection has been determined to be related to the consumption of koipla, a dish prepared from uncooked freshwater fish. Not unexpectedly, in the present study, it was found that this species was the most important intestinal parasite among Thai laborers and was significantly associated with the consumption of koipla.

Adult↗