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Volume 31, Number 7—July 2025

Research

Transmission Dynamics and Parameters for Pertussis during School-Based Outbreak, South Korea, 2024

U Jin Cho1, Seonghui Cho1, Hyeokjin Lee, Seul-Ki Kang, Bryan Inho Kim, Yukyung Nam, Chiara Achangwa, Jun-Sik Lim, Dong Han Lee2, and Sukhyun Ryu2Comments to Author 
Author affiliation: Gyeongnam Regional Center for Disease Control and Prevention, Busan, South Korea (U.J. Cho, H. Lee, D.H. Lee); The Catholic University of Korea, Seoul, South Korea (S. Cho, Y. Nam, C. Achangwa, S. Ryu); Korea Disease Control and Prevention Agency, Cheongju-si, South Korea (S.-K. Kang, B.I. Kim); Korea University, Seoul (S.-K. Kang, Y. Nam); National University of Singapore, Singapore (J.-S. Lim)

Main Article

Table

Demographic characteristics of confirmed pertussis cases and controls in a boarding school in Busan, South Korea, 2024

Characteristic Total No. cases (%) No. controls (%) p value*
Overall
 400
 48 (12)
 352 (88)
Sex 0.69
M 269 34 (70.83) 235 (66.76)
F
 131
 14 (29.17)
 117 (33.24)
Age group, y 0.43
12–15 134 19 (39.58) 115 (32.67)
16–18
 266
 29 (60.42)
 237 (67.33)
Most recent vaccination 0.36
1st dose 5 0 5 (1.42)
3rd dose 1 0 1 (0.28)
4th dose 31 5 (10.42) 26 (7.39)
5th dose 39 4 (8.33) 35 (9.94)
6th dose 321 39 (81.25) 282 (80.11)
Unavailable†
 3
 0
 3 (0.85)
Years since last vaccination 0.18
0–4 228 26 (54.17) 202 (57.39)
5–9 138 20 (41.67) 118 (33.52)
10–15 31 2 (4.17) 29 (8.24)
Not available 3 0 3 (0.85)

*Calculated by χ2 test, Mann-Whitney U test, or Student t-test, where appropriate. †Vaccine history could not be obtained either from the persons or from the vaccine registry database of the Korea Disease Control and Prevention Agency.

Main Article

1These first authors contributed equally to this article.

2These authors were co–principal investigators.

Page created: May 31, 2025
Page updated: June 06, 2025
Page reviewed: June 06, 2025
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