Implementation of a Larval and pupal Source Reduction Program (LSRP) for sustainability in prevention and control of Dengue Haemorrhagic Fever (DHF) in community of Krabi Province, Thailand

Abstract

Objectives 1) to study the change in knowledge, perceived susceptibility, self-efficacy and practices regarding the prevention and control of DHF 2) to assess the House Index (HI), Breteau Index (BI), Container Index (CI) and Pupae Index (PI) between the experimental and control groups after the LSRP implementation. Methods: A quasi-experimental study was conducted from March to November 2012 in Krabi Province. The participants were students and housewives were selected by simple random sampling. They were equally divided into two generations, the first generation who received 3-day newly LSRP. The second generation who received the DHF knowledge transfer from the first generation via buddy method. The intervention effects were assessed five times after intervention in each generation. The Linear Mixed model analysis was used to evaluate the mean score differences between groups of each follow-up time. Results: The LSRP improved the knowledge, perceived susceptibility, self-efficacy, and practices regarding DHF prevention and control of both student and housewife, they were significant difference between experimental and control groups of p < .05, the buddy method has improved the knowledge and perceived susceptibility in the student group, while, it has improved the self-efficacy and practices regarding DHF prevention and control in the housewife group after intervention for three months, they were significant difference between experimental and control groups of p < .05. For both interventions, the result found that, the knowledge, perceived susceptibility and self-efficacy between generations of both student and housewife were similar of p >.05, in addition, in the housewife group the practice between generations were similar of p >.05. Conclusion and Discussion: For student group, LSRP has affected to the knowledge, perception, self-efficacy and practice for three months after intervention better than nine months after intervention. While, the LSRP was not affect to the HI, CI, BI and PI. In addition the buddy method could be used to transfer the knowledge, perceived susceptibility and self-efficacy between generations. For housewife group, the LSRP has affected to the Knowledge, perceived susceptibility, self-efficacy, practices regarding DHF prevention and control and BI only for three months after intervention, in addition, the buddy method could be used to transfer the knowledge, perceived susceptibility, self-efficacy and practice regarding DHF prevention and control between generations for nine months after intervention. While, the buddy method were not affect to the HI, CI, BI and PI in both student and housewife groups.