Evaluation of a Measles Surveillance System According to Measles Elimination Goal, Narathiwat Province, 2017-2018

Abstract

Objective: This study aims to assess a measles-based surveillance system based on quantitative measles elimination programs, including sensitivity, positive predictive value, data accuracy and timeliness and to evaluate the results of the measles surveillance system according to the measles elimination goal and indicators such as laboratory confirmation not less than 80% and the investigation of aกll suspected patients within 48 hours. Methods: This study is a Cross-sectional study. By study information from the measles online database and information from the medical records of patients at the hospital in Narathiwat Province, 2 locations both in the outpatient and inpatient departments who received treatment in the hospital from January 1, 2017 – December 31, 2018. Results: In this study, there was a report of 308 patients who had fever with rash or the patients suspected of measles or rubella. There were 86.4% with measles surveillance definition and 13.6% were not defined. Sensitivity was 27.8%. Positive predictive value was 100.0%. Data accuracy of gender, age, occupation, type of patients, address during onset, fever onset date, rash onset date, primary diagnosis by doctor, date of diagnosis, date of report, date of investigation and laboratory confirmation were 97.3, 98.6, 91.9, 91.9, 90.5, 91.9, 79.7, 98.6, 83.8, 95.9, 98.6 and 97.3%, respectively. Timeliness was 91.4%. Laboratory diagnosis was 27.1%. Disease investigation in all suspected patients within 48 hours was 29.7%; more than 48 hours was 4.5%, and without investigation was 65.8% Conclusion: Sensitivity was at a level that needed improvement, while the positive predictive value was good. Most data variables showed good accuracy, except for rash onset date. Timeliness of reporting was good. Laboratory confirmation was less than 80%, which is at a level requiring improvement. Disease investigation within 48 hours for suspected cases is emphasized.