“…This could be explained by lack of periodic students' observation, guidance, role models,and lack of incentives, and intuitional guidelinesthat might becontributing factors to these results.These resultswere in congruent with a study by Silva, et al (2007) who did not find any effect after three months of education (39) . In this regard, Wandel et al (2010)claimed that enhancing HH compliance was not achieved neither with a high level of knowledge nor with social influence (40) . In contrast to these findings, Silmah, et al (2016), and Ahmed, et al (2006) reported greatest improvement in HH knowledge and compliance among hcws immediately and three months following a hospital-wide educational intervention (42,43) average adherence with HH recommendations is usually estimated to be below, but varies between different hospital departments, among professional categories, and according to working conditions (44) .…”