Intestinal parasitosis among the elderly people in Kathmandu Valley.

Central Department of Microbiology, Tribhuvan University, Kathmandu, Nepal.
Nepal Medical College journal : NMCJ 12/2006; 8(4):243-7.
Source: PubMed

ABSTRACT Present study was carried out among the elderly people (60+ years of age) from August 2005 to July 2006 in Kathmandu Valley to assess the prevalence of intestinal parasitosis in them. Stool samples were collected from 235 elderly people (122 from government elderly home, 66 from private elderly home and 47 from the households in a rural community). The samples were examined by formal ether sedimentation and Sheather's sucrose floatation followed by Kinyoun's modified Ziehl-Neelsen staining. The overall prevalence of intestinal parasites was found to be 41.7%, out of which 30.6% had multiple parasitism. The government elderly home had significantly higher parasitic prevalence (50.8%) followed by the rural community (46.8%) and the private elderly homes (21.2%) (P<0.05). Males (43.8%) had slightly infection rate than females (40.4%) (P>0.05). There was equal infection rate with protozoa (25.8%) and helminths (27.0%). Trichuris trichiura (39.4%) and Entamoeba histolytica (19.7%) were the commonest helminth and protozoa, respectively.

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The purpose of this study is to evaluate the prevalence and intensity and examine the risk factors of soil transmitted helminth (STH; i.e., roundworm [Ascaris lumbricoides], hookworms [Ancylostoma duodenale and Necator americanus], and whipworm [Trichuris trichiura]) infections in Nepal. Five hundred and ninety-four adults (256 men and 338 women) were selected via convenience sampling from five communities in Nepal. The Kato-Katz method was used to assess the prevalence and intensity of STH infection in this population. Prevalence of STH infection ranged from 3.3 to 51.5% (3.3% in Birendranagar in Chitwan, 3.5% in Kuleshor in Kathmandu, 11.7% in Kanyam in Ilam, 17.0% in Birendranagar in Chitwan and 51.4% in Khokana in Lalitpur District). Multivariable regression analysis revealed that not using soap for hand-washing was significantly associated with the prevalence and infection intensity of roundworm, hookworms and whipworm. Similarly, not wearing sandals or shoes outside was significantly associated with the prevalence and infection intensity of roundworm and hookworms, but not with infection intensity of whipworm. Literacy, being underweight or overweight, anemia and occupation were not associated with prevalence and intensity of roundworm and hookworms infection, but there was an association between occupation and the prevalence of whipworm infection. STH infection was associated with individual hygiene behavior, but not with nutritional status or socio-demographic characteristics. Health policy focusing on changing individual hygiene behaviors might be useful in addressing STH infection in Nepal.
    Transactions of the Royal Society of Tropical Medicine and Hygiene 01/2014; 109(4). DOI:10.1093/trstmh/tru013 · 1.93 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Intestinal parasites are common in countries with low socioeconomic development with poor sanitation and personnel hygiene like Nepal. The aim of the present study was to study the positivity rate and seasonal variation of intestinal parasite in stool samples submitted for routine stool examination in Kathmandu Medical College, Nepal. Intestinal parasitism was evaluated by examination of 4176 stool samples collected over 14 months (July 2009 to September 2010) using standard procedures. The positivity rate of intestinal parasites was 14.4%. The high positivity rate of protozoa (89.7%) was noted over helminthes (0.8-2.7%). Entamoeba histolytica (n=288, 6.89%) was most frequently seen, followed by Giardia lamblia (n=252, 6.03%) among other intestinal parasites. The recovery of intestinal parasites was higher during rainy season. Improvement of sanitation and personal hygiene is needed to prevent parasite infestation among Nepalese.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Background: Entamoeba histolytica/Entamoeba dispar and Enterobius vermicularis are the major health problems in the developing countries especially in Iran. The prevalence of infection is variable among different social groups in the world. Objectives: Since elderly and mentally retarded are high risk group, the present survey was carried out in order to determine the prevalence of intestinal parasites especially these parasites in elderly and mentally retarded residence in Golabchi Center, Kashan, Iran. Materials and Methods: In this Cross-sectional study a total of 243 stool samples and 279 Scotch tapes from elderly and mentally retarded people were collected. Intestinal parasitic infections especially E.histolytica/E.dispar was determined by Stool examination. Scotch tape was used for diagnosis of Enterobius vermicularis. The demographic data were recorded by questionnaire and were analyzed by SPSS and X2. Results: The overall infection rate of intestinal parasite was 78.7% (191 out of 243 subjects). The prevalence of E.histolytica/E.dispar and E.vermicularis in elderly were 16.8%, 25.5% and in mentally retarded 15%, 49.1% respectively. Prevalence of pathogenic parasites was: Taenia spp. 1.6%, Hymenolepis nana 0.8%, one case of Strongyloides stercoralis, Blastocystis hominis 33.3%, Giardia lamblia 4.5%, Dientamoeba fragilis 1.6%. The rate of infection in mentally retarded was higher than elderly (P < 0.001). The prevalence of E.vermicularis in the male was 2.5 times more than female (P < 0.001). There was significant relation between annual itching and nail chewing and Enterobiasis (P < 0.05). Conclusions: This study showed that infection with intestinal parasites especially E.histolytica/E.dispar and E.vermicularis was higher than expected in elderly and mentally retarded. Due to importance of these parasites and some risk factors such as population density and an immunosuppressive background in elderly, health education and mass medication for control of disease is emphasized.

Full-text (2 Sources)

Available from
Jun 3, 2014