33 Soil-transmitted helminths (STH) have remained a major threat to human especially children 34 in developing countries including Nigeria. Interventions have always been geared towards 35 school-aged children, neglecting preschool-aged children and occupational risk adults. The 36 Soil-Transmitted Helminthiasis Advisory Committee (STHAC) recently suggested 37 incorporating other at-risk groups. In the context of this recommendation, this study assessed 38 the associated risk of STH infection among agrarian communities of Kogi State, Nigeria. A 39 total of 310 individuals of all ages participated in the cross-sectional survey. Stool samples 40 were analyzed using standard Kato-Katz method. A total of 106 (34.2%) individuals were 41 infected with at least one STH. Hookworm was the most prevalent (18.1%); followed by 42 Ascaris lumbricoides (16.8%). Worm intensity was generally light. Prevalence of infection 43 was similar between four age groups considered (preschool, school, 'women of reproductive 44 age' and older at-risk group). Poor socio-economic status (SES) was a major risk for STH 45 infection. Using a 20-assets based criteria, 68 (23.1%) and 73 (24.7%) of 295 questionnaire 46 respondents were classified into first (poorest) and fifth (richest) wealth quintiles respectively.47 Risk of infection with STH was 60% significantly lower in the richest wealth quintile 48 compared to the poorest (Prevalence Ratio (PR) = 0.4843, 95% CI = 0.2704 -0.8678, p = 3 3 49 0.015). Open defecators were more likely to harbour STH than those who did not (PR = 50 1.7878, 95% CI = 1.2366 -2.5846, p = 0.00201). Pit latrine and water closet toilet each 51 approximately reduced STH infection by 50% (p < 0.05). Preventive chemotherapy for all age 52 groups, health education and provision of basic amenities especially toilets are needed in 53 order to achieve the goal toward the 2020 target of STH control.
Author summary58 Soil-transmitted helminths (STHs) are major cause of morbidities globally, especially among 59 children in developing countries such as Nigeria. Present World Health Organization 60 recommended control strategy solely require preventive chemotherapy targeting preschool-61 aged children (PSAC) and school-aged children (SAC), and the recently included women of 62 reproductive age (WRA). The Soil-Transmitted Helminthiasis Advisory Committee (STHAC) 63 which is saddled with responsibility of evaluating STHs status and providing appropriate 64 recommendations proposed that preventive chemotherapy be extended to other at-risk groups.65 This study evaluates this and some other recommendations of STHAC 2016 using sections of 66 a state in Nigeria where soil-transmitted helminthiasis is endemic.67 Findings from this study supports recommendations for extension of preventive chemotherapy 68 to other at-risk groups apart from PSAC and SAC. It supports WASH (water, sanitation and 69 hygiene) as integral part of STH control. This finding emphasizes the need for health 70 education and change in attitude which could promote tene...