Proceedings of the Andalas International Public Health Conference 2017

O1 An outbreak of typhoid fever at secondary school of Magelang district, Indonesia in 2016 Nasir Ahmad1, Adi Isworo2, Chrisnaety Indriani Silaban1 1Field Epidemiology Training Programs, Gadjah Mada University, Yogyakarta 55281, Indonesia; 2Polytechnic of Health, Indonesian Ministry of Health, Semarang, 50268, Indonesia Correspondence: Nasir Ahmad (nasirahmad3443@gmail.com) Background On October 15th, 2016, Magelang District Health Office (DHO) received a report from a school that some students had typhoid fever. Outbreak investigation was done to know the magnitude of outbreak, the cause, and describe the outbreak. Materials and methods This research was a descriptive epidemiology study with active case finding to find additional cases. Data were collected by interview using standard questionnaire. The researchers took sample of clean water, drinking water and blood in school. Water sample and blood were sent to laboratory. Results Total number of cases were 150 students. The highest attack rate was found among the first year students 139 per 381 (36.48%) and 72 per 359 females (20.1%). The onset of disease started from 28 September to 26 October. There was a bathing activity in the river at on 26 September that the students attended which was followed by eating together without washing hand with soap. IgM was positive in 51 students and water sample was negative for Salmonella typhi. Conclusions There was an outbreak of typhoid fever with 150 cases in school on September to November 2016. The outbreak was caused by bathing activity in the river and not washing hand before eating.