Clinical and Experimental Pediatrics

Guideline

Infection

Recommendation for use of 15- and 20-valent pneumococcal conjugate vaccines in Korean infants and children

Ki Wook Yun, Dong Hyun Kim, Jong Gyun Ahn, Byung-Wook Eun, Jin Lee, Jina Lee, Taek-Jin Lee, Hyunju Lee, Dae Sun Jo, Eun Young Cho, Hye-Kyung Cho, Soo-Han Choi, Young June Choe, Ui Yoon Choi, Yun-Kyung Kim; The Committee on Infectious Diseases of the Korean Pediatric Society

Clin Exp Pediatr. 2026;69(1):76-83. Published online December 30, 2025

Compared to PCV13, PCV15 includes 2 (22F and 33F), and PCV20 includes 7 (8, 10A, 11A, 12F, 15B, 22F, and 33F) additional serotypes. The vaccination schedule remains the same: primary doses at 2, 4, and 6 months, and a booster at 12–15 months. If PCV13 was administered in the primary series, PCV15 and PCV20 may be used to complete it or as a booster.

DOI: https://doi.org/10.3345/cep.2025.01900

Review Article

Infection

Recommendation for use of a long-acting monoclonal antibody to prevent respiratory syncytial virus infection in infants and young children

Soo-Han Choi, Dong Hyun Kim, Jong Gyun Ahn, Ki Wook Yun, Byung-Wook Eun, Jin Lee, Jina Lee, Taek-Jin Lee, Hyunju Lee, Dae Sun Jo, Eun Young Cho, Hye-Kyung Cho, Young June Choe, Ui Yoon Choi, Yun-Kyung Kim; The Committee on Infectious Diseases of the Korean Pediatric Society

Clin Exp Pediatr. 2025;68(10):742-750. Published online September 3, 2025

To prevent respiratory syncytial virus (RSV)-associated lower respiratory tract infections, a single dose of nirsevimab, a long-acting monoclonal antibody, is recommended for all neonates born during the RSV season (October to March) and all infants younger than 6 months old at the start of the RSV season. Nirsevimab should be administered shortly after birth to neonates and just before or early in the season to infants entering their first RSV season.

DOI: https://doi.org/10.3345/cep.2025.01067

Perspective

Infection

Statement on healthcare system preparedness in response to COVID-19 Omicron subvariants BA.4 and BA.5 surge in Korea from the Korean Pediatric Society and Korean Society of Pediatric Infectious Diseases

Eun Young Cho, Dong Hyun Kim, Soo-Han Choi, Ki Wook Yun, Jong Gyun Ahn, Hye-Kyung Cho, Hyunju Lee, Jina Lee, Taek-Jin Lee, Byung-Wook Eun, Jin Lee, Dae Sun Jo, Yun-Kyung Kim, Yae-Jean Kim; Committee on Infectious Diseases of the Korean Pediatric Society

Clin Exp Pediatr. 2022;65(11):510-511. Published online September 23, 2022

Web of Science 2 Crossref 2

In order to respond to the recent surge in coronavirus disease 2019 (COVID-19) cases and the continuously changing epidemiology of COVID-19, a sustainable and flexible pediatric healthcare system must be prepared considering the specificity of pediatric care. We demand a more proactive response from the health authorities to check the current state of pediatric COVID-19 patient care and to ensure that pediatric patients receive appropriate and timely management.

DOI: https://doi.org/10.3345/cep.2022.01088

Review Article

Infection

Epidemiological changes in infectious diseases during the coronavirus disease 2019 pandemic in Korea: a systematic review

Jong Gyun Ahn

Clin Exp Pediatr. 2022;65(4):167-171. Published online November 30, 2021

Web of Science 15 Crossref 14

· Nonpharmaceutical interventions (NPIs) have had a major impact on the epidemiology of various infectious diseases in Korea.
· Respiratory diseases and gastrointestinal viral diseases were significantly reduced during the NPI period.
· The decrease in Kawasaki disease after the introduction of NPI is an unintended result.
· Infectious diseases that decreased during NPI use may re-emerge.
· We must continuously monitor the epidemiology of various infectious diseases during the coronavirus era

DOI: https://doi.org/10.3345/cep.2021.01515

Recommendation for use of diphtheria and tetanus toxoids and acellular pertussis, inactivated poliovirus, Haemophilus influenzae type b conjugate, and hepatitis B vaccine in infants

Hye-Kyung Cho, Su Eun Park, Yae-Jean Kim, Dae Sun Jo, Yun-Kyung Kim, Byung-Wook Eun, Taek-Jin Lee, Jina Lee, Hyunju Lee, Ki Hwan Kim, Eun Young Cho, Jong Gyun Ahn, Eun Hwa Choi; The Committee on Infectious Diseases of the Korean Pediatric Society

Clin Exp Pediatr. 2021;64(12):602-607. Published online June 8, 2021

Web of Science 4 Crossref 4

∙ Diphtheria and tetanus toxoids and acellular pertussis-inactivated poliovirus-Haemophilus influenzae type b-hepatitis B (DTaP-IPV-Hib-HepB) was licensed in Korea in April 2020.
∙ DTaP-IPV-Hib-HepB is indicated as a 3-dose primary series for infants aged 2, 4, and 6 months who received the standalone HepB vaccine at birth.
∙ Infants born to HepB surface antigen-positive mothers are currently recommended to be immunized with HepB immunoglobulin at birth and then monovalent HepB vaccine at 0, 1, and 6 months.

DOI: https://doi.org/10.3345/cep.2021.00507

Original Article

Enhanced detection and serotyping of Streptococcus pneumoniae using multiplex polymerase chain reaction

Jong Gyun Ahn, Seong Yeol Choi, Dong Soo Kim, Ki Hwan Kim

Clin Exp Pediatr. 2012;55(11):424-429. Published online November 23, 2012

Crossref 16

Purpose

Methods for quick and reliable detection of Streptococcus pneumoniae are needed for the diagnosis of pneumococcal disease and vaccine studies. This study aimed to show that sequential multiplex polymerase chain reaction (PCR) is more efficient than conventional culture in achieving S. pneumoniae-positive results.

Methods

Nasopharyngeal (NP) secretions were obtained from 842 pediatric patients admitted with lower respiratory infections at Severance Children's Hospital...

DOI: https://doi.org/10.3345/kjp.2012.55.11.424

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