Dengue surveillance evaluation at Wangnuea Hospital, Lampang Province, Thailand during 2018–2020

Abstract

Backgrounds: Dengue fever is the public health problem in many countries. In 2020, Lampang Province were 958 case of Dengue hemorrhagic fever (DHF) and case fatality rate was 0.14%. The reports of dengue fever cases in Wangnuea District were the 4th highest of Lampang Province and incidence rate was higher than median during the last 5 years. This study aimed to evaluation of Dengue surveillance system in Wangnuea Hospital.
Methods: Cross–sectional descriptive study was developed. The study group were among DHF patients in Wangnuea Hospital who had been diagnosed with dengue hemorrhagic fever and fever unspecified and viral infections during 1 January 2018–31 December 2020. The definition of dengue from epidemiological surveillance system evaluation was used for case definition. The study design is to review the medical record and interview the personnel who involved in the system by using a questionnaire for collecting information and analyzed by content analysis. Excel (Pivot Table) and Epi info Version 3.4.5 were used for quantitative data by descriptive statistics.
Result: Sensitivity of surveillance system was 67.62% and predictive value positive was 97.26 %. In terms of timeliness, the percentage of timely disease reports to epidemiologists was 87.62%. The investigated outbreak in three–hour was 87.32% and reported data to surveillance system was 87.32%. The Data of sex and age in reports 506 and medical record were discrepancy. On the data quality, definitions, and reports by patients in the reports 506, completed record of name and sex 100% accurate. The lowest accuracy among variables was date of onset (88.73%). Surveillance systems are simple, flexible, high acceptability and stability.
Recommendations: They should add pop–up alert in Hos–xp system. Tourniquet test should be routinely applied for all high grade fever cases particular during epidemic period. Analyze and alert information to medical personal for effective epidemiological surveillance.