Impact of Multidisciplinary-Led Implementation of Antimicrobial Stewardship Programs in Zambia: Findings and Implications

TL;DR

This study shows that implementing antimicrobial stewardship programs in Zambian hospitals improved key areas, but challenges remain in sustaining progress and addressing gaps.

Contribution

The study provides new evidence on the effectiveness of AMS programs in a resource-limited African context.

Findings

AMS program scores increased from 59% to 81% after implementation.

Education and accountability showed the most significant improvements.

Persistent gaps were found in AMS actions and feedback mechanisms.

Abstract

Background/Objectives: Antimicrobial resistance (AMR) is a critical global health threat, with sub-Saharan Africa disproportionately affected. Antimicrobial stewardship (AMS) programs are essential in combating AMR; however, data on their implementation in resource-limited settings like Zambia remain scarce. This study assessed the post-implementation status of World Health Organization (WHO) AMS core elements in selected public hospitals in Zambia. Methods: A cross-sectional pre- and post-intervention survey was conducted in 11 public hospitals across Zambia’s 10 provinces. Baseline (pre-implementation) and 12-month follow-up (post-implementation) assessments were carried out using the WHO-adapted Periodic National and Healthcare Facility Assessment Tool. The six AMS core elements evaluated included leadership, accountability, AMS actions, education, monitoring, and feedback. Results: The average AMS program score increased from 59% at pre-implementation to 81% at post-implementation. Significant improvements were observed in education and training (+36%) and accountability (+31%). While leadership and monitoring also showed positive trends, gaps persisted in AMS actions (63%) and feedback/reporting mechanisms (68%). Drug and Therapeutics Committee (DTC) functionality improved by 23%, with 90% of facilities now holding regular DTC meetings. Implementation of AMS actions, such as ward rounds, rose from 0% to 73%. Challenges remained in clinical audit feedback, resource mobilization, and prescribing optimization. Variability across facilities highlighted differences in leadership, resources, and technical capacity. Conclusions: AMS implementation in Zambia improved substantially across key domains. However, sustained leadership, adequate financing, and continuous capacity-building are needed to address persistent gaps and ensure long-term success in mitigating AMR.

Figures