Public health interventions for preventing re?infection of <i>Opisthorchis viverrini</i> : application of the self?efficacy theory and group process in high?prevalent areas of Thailand

Objective To study the effectiveness of public health interventions in preventing Opisthorchis viverrini (OV) re-infection high-prevalence areas Thailand. Methods 68 people from Sisaket, province with second-highest prevalence Thailand, who tested positive for OV eggs faeces and took praziquantel before start study, participated. 34 participants were allocated to experimental group, which received a 12-week intervention based on self-efficacy theory group process between July October 2018. The control usual services. Data collected using questionnaire reliability 0.84. Faecal examinations formalin-ether concentration technique conducted after experiment. rate was analysed 12 weeks one year. Descriptive inferential statistics, including paired t-test independent t-test, employed data analysis. Results After experiment, mean scores knowledge, perceived self-efficacy, expectation prevention behaviour significantly higher than experiment also (P < 0.05). Conclusion is useful. It educated about OV, changing prevent re-infection. As result, no re-infections observed nor at one-year follow-up. Public benefits will be evident if results are extended other areas.