Contextual Barriers and Facilitators Influencing Implementation Fidelity of School-Based Preventive Chemotherapy for Schistosomiasis: A Qualitative Study in Two Endemic Districts in the Central Region, Ghana.

This qualitative study in Ghana identifies that the implementation fidelity of school-based schistosomiasis preventive chemotherapy is shaped by a complex interplay of sociocultural, organizational, and health system factors, necessitating a shift toward community-centered strategies that prioritize engagement, logistical support, and intersectoral collaboration to achieve sustained disease control.

The Gist

Imagine a school-based health program as a massive, well-organized school bus designed to pick up every child in a town and give them a special "health ticket" (medicine) to fight a hidden parasite called schistosomiasis. The goal is to get 75% of the kids on that bus so the disease disappears.

This paper is like a mechanic's report on why that bus isn't picking up as many kids as it should in two specific towns in Ghana (Gomoa East and Awutu Senya East). The researchers didn't just count the kids; they talked to the drivers (teachers), the station managers (health coordinators), and the people waiting at the bus stop (parents) to understand why the bus is often half-empty.

Here is what they found, broken down into simple stories:

1. The "Ghost Stories" at the Bus Stop

The biggest problem wasn't that the bus was broken; it was that people were scared to get on.

• The Rumor Mill: Many parents believed wild rumors, like the medicine was actually a "poison" or a "birth control pill" meant to stop their children from having families later. Some religious leaders even called the medicine "Satan's strategy."
• The Result: Parents would pull their kids out of school on the day of the event, or tell them not to go. It was like a bus driver arriving at a stop where everyone is hiding behind their curtains because they think the bus is a monster.

2. The "Big Pill" and the "Faint"

Even when kids were willing, the medicine itself caused some panic.

• The Size Issue: The pill (praziquantel) is quite large. Kids were scared to swallow it. Some pretended to take it and then spat it out when the teacher wasn't looking.
• The "Contagious" Nausea: Sometimes, a child would feel a little dizzy or sick after taking the pill (which can happen if they haven't eaten). But because kids watch each other, one kid saying "I feel sick" would make 50 other kids suddenly feel sick too, even if they hadn't taken the pill yet. It was like a wave of fear rolling through the classroom.
• The Teachers' Fear: The teachers, who were supposed to hand out the pills, were often terrified. They didn't know how to handle a child who got sick, and they were afraid parents would blame them or make them pay hospital bills.

3. The Bus Had No Fuel or Maps

The program was also struggling with "logistics," which is just a fancy word for "getting things done."

• Missing Tools: To give the right dose of medicine, you need to know a child's height. But many schools didn't have measuring tapes. Teachers were forced to draw lines on the classroom walls with chalk to guess the height. It was like trying to bake a cake without a measuring cup—you might get it right by luck, but you'll probably mess it up.
• The Fuel Shortage: The buses (health workers) often didn't have money for gas to get to remote schools. Sometimes, the money for the event arrived after the event was supposed to start, forcing everyone to rush and skip important steps like talking to parents beforehand.

4. The "One-Day" Rush

The program was supposed to be a steady, yearly routine, but it was more like a surprise pop-up event.

• The Timing Gap: Because the money and training arrived late, the whole event was crammed into a single day. If a child was absent that one day, they missed the medicine entirely. There was no "make-up day."
• The Out-of-School Kids: The bus only went to schools. Kids who didn't go to school (or dropped out) were never picked up, even though they were just as likely to get sick.

What Worked? (The Good Drivers)

Despite the chaos, the bus did move in some places because of a few key things:

• The Brave Teacher: In schools where a teacher stood up first, took the pill themselves, and showed it was safe, the kids felt brave enough to follow. It was like a teacher jumping into a pool to show the kids the water wasn't hot.
• The Early Warning: When teachers and health workers talked to parents weeks before the event (instead of the day before), the rumors died down, and trust went up.
• The Teamwork: When the Health Department and the Education Department worked together like a well-oiled machine, the teachers felt supported and the event ran smoother.

The Bottom Line

The paper concludes that you can't just drop a box of medicine in a school and expect it to work. Implementation fidelity (a fancy term for "doing the job exactly as planned") depends on the whole environment.

If you want the "health bus" to fill up, you can't just drive faster. You have to:

1. Stop the scary rumors before they start.
2. Give the drivers (teachers) better maps (tools) and fuel (money).
3. Make sure the bus runs on a predictable schedule so people know when to show up.
4. Find a way to pick up the kids who aren't on the bus route (out-of-school children).

The study suggests that until these "contextual" issues are fixed, the medicine will keep arriving, but the disease will keep spreading because the program isn't reaching everyone it needs to.

Technical Summary

1. Problem Statement

Schistosomiasis remains a critical neglected tropical disease (NTD) in sub-Saharan Africa, with school-aged children bearing a disproportionate burden due to frequent water contact. In Ghana, school-based preventive chemotherapy (PC) using praziquantel has been the primary control strategy since 2008. However, implementation fidelity—the degree to which the program is delivered as intended—consistently falls below the World Health Organization (WHO) target of 75% coverage.

Despite the availability of drugs, persistent transmission and fluctuating coverage rates (e.g., 68–74.2% in the Central Region) suggest that operational and contextual barriers are undermining program effectiveness. There is a lack of deep understanding regarding why these fidelity gaps exist, specifically how sociocultural, organizational, and health system factors interact to influence the delivery of Mass Drug Administration (MDA) campaigns.

2. Methodology

• Study Design: A phenomenological qualitative study employing a maximum-variation purposive sampling technique.
• Study Setting: Two schistosomiasis-endemic districts in Ghana's Central Region: Gomoa East and Awutu Senya East. These areas are characterized by high transmission potential due to rivers (Pra and Akrudu) and the Gulf of Guinea.
• Participants: 21 stakeholders were interviewed, including:
  • 4 District NTD Coordinators.
  • 2 District School Health Education Program (SHEP) Coordinators.
  • 9 SHEP Teachers.
  • 6 Head Teachers.
• Data Collection: Semi-structured interviews (Key Informant Interviews and In-Depth Interviews) conducted between June 20 and July 30, 2025. Interviews lasted 30–60 minutes and were audio-recorded.
• Analytical Framework:
  • Theoretical Lens: The study utilized a dual-framework approach:
    1. Consolidated Framework for Implementation Research (CFIR): To analyze multi-level determinants (intervention characteristics, outer/inner settings, individual characteristics, and implementation processes).
    2. Carroll et al.'s Implementation Fidelity Framework: To assess specific fidelity dimensions (coverage, adherence, dose delivered, quality of delivery, and differentiation).
  • Analysis: Thematic analysis using NVivo version 15, guided by Braun & Clarke's six-step framework. Both inductive (data-driven) and deductive (theory-driven) coding were applied. Inter-coder reliability was ensured through independent coding of a subset of transcripts.
• Ethical Considerations: Approved by the Ghana Health Service Ethics Review Committee (GHS-ERC 053/05/25). Written informed consent and anonymity were strictly maintained.

3. Key Contributions

This study makes several significant contributions to the literature on NTD control:

• Integration of Frameworks: It uniquely combines CFIR and the Implementation Fidelity Framework to provide a holistic view of how structural and sociocultural factors interact to degrade program fidelity, rather than treating them as isolated issues.
• Mechanism of "Social Amplification": The study identifies how adverse drug reactions (ADRs) are not just clinical events but social phenomena. It describes a "social amplification" effect where individual side effects trigger collective anxiety and peer imitation, leading to mass refusal.
• Role of Teacher Modeling: It highlights the critical, often overlooked role of teachers as "role models." The study demonstrates that when teachers physically take the drug first, it significantly reduces student fear and increases uptake, acting as a powerful behavioral intervention.
• Temporal Dynamics of Fidelity: The research underscores that irregular scheduling (e.g., skipping years due to funding) and short implementation windows (single-day campaigns) systematically exclude vulnerable populations (out-of-school children, absentees) and erode community trust over time.

4. Key Results

The analysis revealed a complex interplay of barriers and facilitators:

Barriers to Implementation Fidelity

1. Sociocultural Beliefs & Misconceptions: Deep-seated myths (e.g., praziquantel causes infertility or is "poison") and religious objections (e.g., "Satan's strategy") led to parental resistance and children being kept home.
2. Drug-Related Fears:
   • Clinical: Real side effects (dizziness, nausea) were exacerbated by administering drugs on empty stomachs.
   • Psychosomatic: Fear spread rapidly among students, causing mass fainting or refusal even before drug administration.
   • Physical: The large size of praziquantel tablets made swallowing difficult for children.
3. Logistical & Resource Constraints:
   • Measurement: Severe shortage of height-measuring tapes forced teachers to improvise with wall markings, leading to inaccurate dosing.
   • Transport: Lack of vehicles and fuel delayed drug distribution and supervision, particularly in remote schools.
   • Funding: Late release of funds compressed timelines, preventing adequate pre-MDA sensitization and training.
4. Human Resource Gaps:
   • Training: Teachers often received rushed training (sometimes only one teacher per school) just days before MDA, leaving them unprepared to manage side effects or answer parent questions.
   • Incentives: Lack of financial or non-financial incentives demotivated teachers, reducing their commitment.
5. Coverage Gaps: Private schools were often excluded due to registration issues, and out-of-school children were entirely missed by the school-based model.

Facilitators of Implementation Fidelity

1. Teacher Commitment & Role Modeling: Dedicated teachers who prioritized student health and took the drug themselves first successfully calmed student fears and improved uptake.
2. Effective Sensitization: Early, consistent community engagement (via PTAs, churches, mosques) prior to MDA helped debunk myths and build trust.
3. Intersectoral Collaboration: Strong coordination between the Ghana Health Service (GHS) and Ghana Education Service (GES), including joint supervision and technical support from health workers, bolstered teacher confidence and protocol adherence.

5. Significance and Recommendations

The study concludes that implementation fidelity is not merely a technical challenge but a context-dependent, system-driven process. The persistence of schistosomiasis in Ghana is linked to the misalignment between program design and the local sociocultural and logistical reality.

Strategic Recommendations:

• Shift to Community-Centered Delivery: Move beyond rigid school-based campaigns to include community-based distribution to reach out-of-school children and address coverage gaps.
• Enhance Sensitization Timing: Conduct robust community engagement weeks or months before MDA to counteract rumors and build trust, rather than rushing sensitization immediately before the campaign.
• Invest in Frontline Implementers: Provide comprehensive training for teachers on pharmacovigilance and side-effect management, along with adequate incentives to maintain motivation.
• Strengthen Logistics: Ensure the timely release of funds and provision of essential tools (e.g., accurate height charts, transport) to ensure precise dosing and timely delivery.
• Regularize Scheduling: Establish a predictable, annual schedule for MDA to normalize the intervention and reduce community uncertainty.
• Leverage Technology: Utilize digital tools (mobile apps, GIS) for real-time monitoring of coverage and fidelity to enable rapid program adjustments.

By addressing these interconnected barriers, Ghana can improve implementation fidelity, achieve the WHO coverage targets, and move closer to eliminating schistosomiasis transmission.