Epidemiological Investigation of the Outbreak of Acute Respiratory Infection caused by Adenovirus Type B55 in a Physical Education School in 2017

Song, Jeongsuk; Lee, Hyerim; Cho, Enhi

The physical education school J is an integrated school specialized in athletics education consisting of 12 classes, 2 classes per grade, with a total of 6 grades including middle and high school. The total school population was 395, consisting of 322 students and 73 teachers. Each student is a member of one of the16 athletic departments, and every student were accommodated in a campus dormitory. As all students with respiratory symptoms were identified as members of the departments using the swimming pool (swimming and modern sports) at the on-site investigation performed on May 22, a retrospective cohort investigation (Study 1) was conducted instantaneously on 59 students and teachers who had been using the swimming pool. And since 22 May prospective active surveillance (Study 2) has been conducted for all students and school personnel to detect additional cases. For the active surveillance, teachers of each class checked the students every morning for any symptoms of acute respiratory infection and reported the results to the public health center. Questionnaire survey and throat swab investigations were conducted on all 59 of swimming and modern sports departments and additional cases from active surveillance. Thirty three cases who were identified in Study 1 and 14 cases who were identified in Study 2 were enrolled as cases in the present study.