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1400 Indian Journal of Public Health Research & Development, July 2020, Vol. 11, No. 7 Detection of Intestinal Helminthic Infection in Rural Communities Using Concentration Method Nathkapach Kaewpitoon Rattanapitoon1, Schawanya Kaewpitoon Rattanapitoon2, Nattawut Keeratibharat3, Pundit Asavaritikrai4, Alisa Boonsuya5, Phornphitcha Pechdee6 1 Assistant Professor, Parasitic Disease Research Center, 2Associate Professor/HOD, School of Translational Medicine, 3Lecturer, School of Surgery, 4HOD, Department of Medical Education, 5Research Assistant, Institute of Medicine, 6Research Scholar, Institute of Research Development, Suranaree University of Technology, Thailand Abstract This study was aimed to determine the intestinal helminthic infections (IHIs) among rural communities of Bua Yai district, Nakhon Ratchasima province, northeastern Thailand. A cross-sectional study was conducted between July 1, 2018 and June 30, 2019 among rural villagers from 22 rural villages of 2 sub-districts. The participants were randomly selected from village enrollment list after proportional allocation of the total sample size. IHIs were prepared by the mini parasep sf faecal concentrator; concentration method, and then were detected using light microscope. Data were analyzed using STATA for windows version 13 and p-value less than 5% was considered as statistically significant. Of the total 454 faecal specimens examined, 6 were positive for at least one intestinal helminthes making the prevalence 1.32%. The most prevalent helminthes were Opisthorchis viverrini (1.26%) and followed by Ascaris lumbricoides (0.39%), Strongyloides stercolaris (0.19%), and Taenia spp. (0.19%), respectively. No significant association was found between IHIs and socio-demographic characteristics (P >0.05). This study reveals that the decreased infection rate is under control and elimination is possible through the prevention and control campaign from Ministry of Public Health in collaborated with network teams in this areas. However, IHIs are found in adults that were particularly apparent regarding the food borne and soil transmitted species of helminthes. A greater focus on intervention is required by improving personal hygiene and sanitation to prevent the spread of IHIs. Using MPFC indicates that concentration method is useful in the rural communities, increasing the yield of parasites with greater processing time and cost. Keywords Detection, Intestinal helminthic Infection, rural community, Thailand Introduction in certain areas of the country3. Humans become infected by accidental ingestion of eggs at their infective The most common intestinal helminthic infections stages or through penetration of the skin by infected (IHIs) are the neglected tropical diseases (NTDs). These larvae in soil, depending on the nematode species. indicate that more than 1.5 billion people, or 24% of the People with infections of heavier infections can cause a world’s population, are infected with soil-transmitted range of symptoms including intestinal manifestations; helminthic infections (STHs) worldwide1. In the abdominal pain and diarrhea, general malaise and ASEAN countries, it is estimated that 300 million people weakness, malnutrition, impaired growth and physical are infected with IHIs2. In 2014, the national prevalence development. Infections of very high intensity can cause rate of IHIs was 18.1% among 15,555 Thais with a high intestinal obstruction that should be treated surgically. prevalence rate of liver fluke and hookworm infections In the case with light infection and intensity usually do not suffer from the infection1. There are urgent needs to expand surveillance activities in rural areas of Thailand, Correspondence author: Nathkapach Rattanapitoon; as well as to ensure mass drug administration is provided [email protected] to populations at risk for intestinal helminthes infections. Indian Journal of Public Health Research & Development, July 2020, Vol. 11, No. 7 1401 Previous studies of the prevalence of intestinal was examined under the microscope, initially screened helminthes among villagers showed a low incidence with a low-power objective lens. Suspected intestinal in Bua Yai district, Nakhon Ratchasima province4. helminthes objects were subsequently examined under a However, no information was available regarding the high-power objective. All of samples were examined by prevalence and intensity of IHIs among the residents in two laboratory technologists. Patients who were infected the level of villages. Recently, Mini Parasep SF Faecal with intestinal helminthes and other known parasites Concentrator (MPFC); a concentration diagnosis tool were treated with anti- intestinal helminthic drugs. is used for detected the intestinal parasitic infection. Statistical analysis MPFC is the solvent-free faecal parasites concentrator represents a simple and useful method for isolating and Statistical analyzes were performed using the identifying helminth’s eggs and larvae, and protozoal computer program; STATA for windows version 13 cysts. The closed concentration system allows rapid, (StataCorp LLC, Lakeway Drive, College Station, reliable, and safe detection of intestinal parasites by Texas, USA). Socio-demographic characteristics of 5-8 inexperienced technologists . This data may able useful the participants were presented as frequencies and for further tool support the epidemiological survey in the percentages for the categorical variables. The different community. of infection between the categorical variables were assessed using Chi-square. Multivariate logistic Materials and Method regression analysis was performed to estimate the odds Study design and area ratio (OR) and 95% confidence interval (95% CI) to assess the associations between potential risk factors and A cross-sectional survey was carried out from July prevalence of IHIs. A P-value of <0.05 was considered 1, 2018 and June 30, 2019 and included people living to be statistically significant. in 22 rural villages located in Khun Thong (12 villages) and Nong Bua Sa-At (10 villages) sub-district, Bua Yai Results district, Nakhon Ratchasima province, northeastern A total of 454 participants (296 male, 158 female) Thailand. The study area is located 355.4 km northeast were included. The overall prevalence of IHIs was of Bangkok and covers an area of 548.5 km2. 1.32% (6/454). The prevalence rate was frequently found Participants were randomly selected from each village in males 1.32% (6/454), aged 31–40 years old 1.32% using a voluntary sampling method. A total of 454 (6/454), primary school 1.32% (6/454), and agriculture volunteers were recruited. Data on socio-demographic 1.32% (6/454), and income of less than 5,000 Baht/ characteristics was collected using a questionnaire. All month (7.23%, 22/304) Table 1. Socio-demographic participants provided their own written consent before characteristics of the participants and IHIs were submitting stool specimens. computed the different in each variable using Chi-square Faecal collection and examination test and found that there were no a significant different between the prevalence of intestinal helminthes and Clean plastic containers were distributed to the each characteristics (Table 1). IHIs were identified asO. participants at enrollment with detailed instructions viverrini 1.26% (2/454) and followed by A. lumbricoides about the procedure for faecal specimen collection. 0.39% (2/454), S. stercolaris 0.19%(1/454), and Taenia All faecal samples were collected early in the morning spp. 0.19%(1/454), respectively. Socio-demographic and conserved in the iceboxes before transportation characteristics associated with IHIs were analyzed to the laboratory at the Parasitic Disease Research using multivariate analysis, are shown in Table 2. No Center, Institute of Medicine, Suranaree University of significant association was found between IHIs and Technology. Each specimen was prepared and examined participants’ gender, level of age, education, job status, for the presence of intestinal helminthes organisms by and location (P >0.05). mini-parasep sf faecal concentrator8,9. Each specimen 1402 Indian Journal of Public Health Research & Development, July 2020, Vol. 11, No. 7 Table 1. Positive rate of intestinal helminthic eggs categorized by general characteristics No. Samples No. positive Infection rate Variables Chi-square P-value n(%) n(%) (%) Gender Male 158(34.80) 4(2.53) 0.88 0.905 0.014 Female 296(63.87) 2(0.67) 0.44 Age (yr) 21-30 16(3.52) 0(0) 0 31-40 59(12.99) 3(5.08) 0.66 41-50 144(31.72) 2(1.39) 0.44 5.836 0.559 51-60 155(33.25) 1(0.64) 0.22 61-70 71(15.64) 0(0) 0 71-80 9(1.98) 0(0) 0 Education Illiterate 2(0.44) 0(0) 0 4.180 0.382 Primary 341(75.11) 3(0.88) 0.66 Secondary 93(20.48) 1(1.07) 0.22 Diploma 7(1.54) 1(14.28) 0.22 Academic 11(2.42) 1(9.09) 0.22 Job Status Famer 331(72.91) 4(1.20) 0.88 2.315 0.382 Employed 80(17.62) 1(1.25) 0.22 Trade 18(3.96) 0(0) 0 Housewife 15(3.30) 0(0) 0 Government officer 6(1.32) 1(16.67) 0.22 Other 4(0.88) 0(0) 0 Location (District) Nong Bua Sa-At 208(45.81) 3(1.44) 0.66 1.385 0.239 Khun Thong 246(54.18) 3(1.22) 0.66 Indian Journal of Public Health Research & Development, July 2020, Vol. 11, No. 7 1403 Table 2. Factors associated to intestinal helminthic infection using multivariate logistic regression analysis No. positive Infection Variables No. Samples n(%) OR (95%CI) P-value n(%) rate (%) Gender Male 158(34.80) 4(2.53) 0.88 1.066 (0.377-3.011) 0.905 Female 296(63.87) 2(0.67) 0.44 Age (yr) 21-30 16(3.52) 0(0) 0 0.920(0.576-1.470)