Impact of WHO multimodal strategy on hand hygiene in a Tunisian hospital: quasi-experimental study

Introduction The World Health Organization (WHO) multimodal strategy is a globally recognized framework designed to improve hand hygiene (HH) knowledge and compliance among healthcare workers (HCWs). Aim: Assess efficacy of WHO multimodal strategy on healthcare workers’ knowledge and compliance on hand hygiene in a teaching hospital in Tunisia. Methods A quasi-experimental study with a pre- and post-intervention design was conducted. Baseline data were collected over 4 weeks, followed by a 3-month intervention period and a 4-week post-intervention assessment. To assess knowledge, a Validated WHO questionnaire was used on pre- and post-intervention (scores: 0–100%). To assess HH compliance, the WHO “Five Moments” framework observation was used. Chi-square tests evaluated categorical variables. A p -value