Effectiveness of Communication Interventions for Toxocariasis Prevention Among the Khmer Population in Tra Cu District, Tra Vinh Province, Vietnam

Abstract

Zoonotic diseases, such as toxocariasis, remain a public health concern, particularly in marginalized communities. Effective prevention requires a multi-sectoral approach, with an emphasis on community-based health education. This study evaluated the effectiveness of a communication intervention in improving knowledge and preventive practices related to toxocariasis among the Khmer population in Tra Cu District, Tra Vinh Province, Vietnam. A community-based pre- and post-intervention design was employed. Following the intervention, the proportion of individuals with good knowledge increased from 32.8% to 67.2% (OR = 6.04; 95% CI: 3.43-10.62), while the proportion demonstrating good practices rose from 27.7% to 72.3% (OR = 122.44; 95% CI: 27.44-546.45). The intervention also significantly improved specific behaviors, including regular deworming of pet dogs and cats (p< 0.001), and reduced risky practices such as no regular hand washing before meals (-17.68%), no regular clean up pet feces (-25.08%), and improper disposal of feces (-24.72%). However, no significant change was observed in attitudes. These findings demonstrate that community-based communication strategies, supported by local leadership, can substantially enhance knowledge and practices for toxocariasis prevention. The results highlight the importance of sustained implementation and scale-up of such interventions across the province.