The claim on the table
On 16 October 2026 Uganda's press reported the third phase of Dettol Hygiene Quest, a school hygiene programme run by Reckitt, the company behind Dettol, with Chil Group. The phase targets 650,000 pupils across Mpigi, Kampala, Kabarole and Kabale, adding hygiene lessons, handwashing demonstrations, digital monitoring and soap distribution to schools already covered in two earlier phases [reported].
The figure that will travel furthest is the reported fall in hygiene-related school absenteeism: 71.6% in phase one and 74.8% in phase two. Both are company-reported outcomes from the programme's own first two phases, not independently evaluated estimates [reported]. That distinction is the difference between a marketing number and a programme design input.
What the strongest independent evidence says
The most rigorous comparable test is the WASH HELPS cluster-randomised trial in Saravane Province, Lao PDR, published in the Journal of Global Health in 2019. UNICEF Lao PDR's Basic Education, Water, Sanitation and Hygiene Programme built water supply, toilets, handwashing stations and drinking-water filters in 492 primary schools between 2013 and 2017 [verified].
The trial randomised 100 schools lacking functional WASH facilities. Enumerators made unannounced visits every six to eight weeks and recorded roll-call absence, illness reports and stool samples. It found no impact of the intervention on pupil absence, or on enrolment, dropout, grade progression, diarrhoea, respiratory infection, conjunctivitis or soil-transmitted helminths. Even in schools with the highest measured fidelity and adherence, the effect on absence was minimal [verified].
The authors' conclusion is blunt: WASH in schools may create an enabling environment, but delivered as it currently is, it may not independently move pupil education and health. Their result matched other recent evaluations that showed limited or mixed effects.
Why the gap is not a contradiction
The two numbers measure different things. Absenteeism in a vendor programme is usually recorded by teachers, often against a category defined as hygiene-related, within a school where the intervention is visible and being promoted. Absence in the Lao trial was measured at unannounced visits, in the same way for intervention and comparison schools, and analysed on an intention-to-treat basis.
WHO still holds that safe drinking-water, adequate sanitation and handwashing with soap reduce diarrhoeal disease risk, and diarrhoea remains the third leading cause of death in children aged one to 59 months, killing around 443,832 children under five each year [verified]. The prevention logic is sound. The programme-effect logic — that building or teaching WASH reliably reduces absence at scale — is what the trial failed to confirm.
A 70% fall in one category of absence can coexist with no measurable fall in total absence. If total absence does not move, the programme has not delivered the outcome its funders are buying.
What a funder or ministry should ask for
Before scaling a school hygiene programme on attendance grounds, request four things and expect them in writing:
- The absence measure and its denominator — total absence, or only absence coded as hygiene-related, over how many pupil-days.
- The comparison — a matched or randomised set of schools not receiving the intervention, measured the same way.
- The independent party that collected and analysed the data, and whether enumerators knew which schools were treated.
- Total absence and grade progression as primary outcomes, with diarrhoea and respiratory infection as secondary, not the reverse.
What this means for the Uganda scale-up
The practical implication is not to abandon school hygiene work. It is to stop pricing it as an attendance intervention until total absence, measured against a comparison group, moves. Hygiene education and soap access have defensible health value; the attendance claim is the part that needs evidence.
Two design changes follow. First, tie programme payments to total absence and grade progression, not to a hygiene-attendance subcategory the programme itself defines. Second, keep an unannounced observation schedule and a comparison group for at least one full academic year, so the third phase produces evidence that survives scrutiny rather than a fourth headline percentage.
What remains uncertain: whether Uganda's delivery model — digital monitoring plus product distribution, at much higher intensity than typical government WASH — performs differently from the Lao trial. That is an empirical question. It should be answered with a design that can detect no effect, or the answer will not be credible. Evidence and advice should not be confused here: the trial evidence is that school WASH alone did not reduce absence; the advice is to measure total absence and to fund health outcomes on their own merit.
Sources
Uganda: Reckitt, Chil Group Target 650,000 Pupils in Hygiene Drive — The Independent (Kampala) via AllAfrica, 16 October 2026. https://allafrica.com/stories/202610160433.html
Impact of a school-based water, sanitation, and hygiene intervention on school absence, diarrhea, respiratory infection, and soil-transmitted helminths: results from the WASH HELPS cluster-randomized trial — Chard AN, Garn JV, Chang HH, Clasen T, Freeman MC. Journal of Global Health, December 2019. https://pmc.ncbi.nlm.nih.gov/articles/PMC6657003/
Diarrhoeal disease — World Health Organization fact sheet, 7 March 2024. https://www.who.int/news-room/fact-sheets/detail/diarrhoeal-disease
About the author
Vincent Dania is a social protection and programme delivery specialist based in Abuja, Nigeria, and chief executive of Hyrax. He is a PhD researcher in social protection at the Institute for Social Science, Peace and Security Studies (ISPSS), Nnamdi Azikiwe University Awka, working on artificial intelligence and labour-market risk among informal workers. Profile: https://vincentdania.name.ng