Journals / Journal of Immunology and Clinical Microbiology / 2026 / Cilt: 11 Sayı: 2

Elizabethkingia meningoseptica in a Ventilator-Dependent Pediatric Patient: Distinguishing Colonization from Infection and the Importance of Targeted Therapy

Ventilatör Bağımlı Pediatrik Hastada Elizabethkingia meningoseptica: Kolonizasyon-Enfeksiyon Ayrımı ve Hedefe Yönelik Tedavinin Önemi

Soner Uzun(Trakya Üniversitesi Tıp Fakültesi Çocuk sağlığı ve hastalıkları)0000-0001-6027-6859
İsmail Davarcı(TRAKYA ÜNİVERSİTESİ, TIP FAKÜLTESİ, TEMEL TIP BİLİMLERİ BÖLÜMÜ, TIBBİ MİKROBİYOLOJİ ANABİLİM DALI)0000-0002-5835-4237
Nükhet Aladağ Çiftdemir(TRAKYA ÜNİVERSİTESİ, TIP FAKÜLTESİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, ÇOCUK SAĞLIĞI VE HASTALIKLARI ANABİLİM DALI, NEONATOLOJİ BİLİM DALI)0000-0002-0365-2181
Metin Uysalol(İSTANBUL ÜNİVERSİTESİ, İSTANBUL TIP FAKÜLTESİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, ÇOCUK SAĞLIĞI VE HASTALIKLARI ANABİLİM DALI, ÇOCUK ACİL BİLİM DALI)0000-0002-4955-8182
Pages
99–105
Publication Date
2026-08-18
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The pathogen was identified using the VITEK-2 automated system; despite multidrug resistance on antimicrobial susceptibility testing, it was found to be susceptible to trimethoprim/sulfamethoxazole (TMP/SMX).

📌 3 Key Takeaways

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Objective & Hypothesis:In this case report, we present the clinical significance and treatment response of Elizabethkingia meningoseptica isolated from an endotracheal aspirate culture in a three-year-old ventilator-dependent male patient with multiple comorbidities, including cerebral palsy and prune belly syndrome, who was followed for a prolonged period in the pediatric intensive care unit.
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Key Findings & Data:The pathogen was identified using the VITEK-2 automated system; despite multidrug resistance on antimicrobial susceptibility testing, it was found to be susceptible to trimethoprim/sulfamethoxazole (TMP/SMX).
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Conclusion & Impact:This case highlights that E. meningoseptica should be considered in the differential diagnosis of pediatric intensive care patients with prolonged hospitalization who do not respond to empirical therapy, and emphasizes the importance of distinguishing colonization from infection and initiating appropriate targeted antimicrobial therapy.
🔬Design:Olgu Sunumu
📍Scope:Comprehensive Sample
⚙️Variables:Elizabethkingia meningoseptica · çoklu antibiyotik direnci · pediatrik yoğun bakım

Abstract

In this case report, we present the clinical significance and treatment response of Elizabethkingia meningoseptica isolated from an endotracheal aspirate culture in a three-year-old ventilator-dependent male patient with multiple comorbidities, including cerebral palsy and prune belly syndrome, who was followed for a prolonged period in the pediatric intensive care unit. The pathogen was identified using the VITEK-2 automated system; despite multidrug resistance on antimicrobial susceptibility testing, it was found to be susceptible to trimethoprim/sulfamethoxazole (TMP/SMX). Due to persistent fever, increased tracheal secretions, and lack of improvement in oxygen requirement under colistin therapy, colistin was discontinued and TMP/SMX treatment was initiated according to the susceptibility result. Marked clinical improvement was observed within 48–72 hours after initiation of TMP/SMX. The isolated organism was considered to represent a clinically significant infection based on clinical deterioration, concurrent radiological and laboratory findings, absence of an alternative pathogen explaining the infection, and clinical response to TMP/SMX within 48–72 hours. This case highlights that E. meningoseptica should be considered in the differential diagnosis of pediatric intensive care patients with prolonged hospitalization who do not respond to empirical therapy, and emphasizes the importance of distinguishing colonization from infection and initiating appropriate targeted antimicrobial therapy.

Özet

Bu olgu sunumunda, serebral palsi ve prune belly sendromu dâhil çoklu komorbiditeleri bulunan, uzun süre çocuk yoğun bakım ünitesinde izlenen ve mekanik ventilatör bağımlı üç yaşındaki erkek hastada, endotrakeal aspirat kültüründe izole edilen Elizabethkingia meningoseptica’nın klinik önemi ve tedaviye yanıtı sunulmaktadır. Etken, VITEK-2 otomatize sistemi ile tanımlanmış; antibiyogramda çoklu ilaç direnci saptanmasına karşın trimetoprim/sülfametoksazole duyarlılık belirlenmiştir. Kolistin tedavisi altında klinik yanıt alınamayan hastada trimetoprim/sülfametoksazol tedavisinin başlanmasını takiben ilk 48–72 saat içerisinde belirgin klinik düzelme gözlenmiştir. İzole edilen etkenin klinik olarak enfeksiyon etkeni olduğu; klinik kötüleşme, eş zamanlı radyolojik ve laboratuvar bulgular, enfeksiyonu açıklayabilecek alternatif bir patojen saptanmaması ve TMP/SMX tedavisine 48–72 saat içinde alınan klinik yanıt birlikte değerlendirilerek düşünülmüştür. Bu olgu, yoğun bakımda uzun süre izlenen ve ampirik tedaviye yanıt vermeyen pediatrik hastalarda E. meningoseptica’nın ayırıcı tanıda mutlaka düşünülmesi gerektiğini ve uygun antimikrobiyal tedavi seçiminin önemini vurgulamaktadır.

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Cite This Article

Uzun, S., Davarcı, İ., Çiftdemir, N. A., Uysalol, M. (2026). Elizabethkingia meningoseptica in a Ventilator-Dependent Pediatric Patient: Distinguishing Colonization from Infection and the Importance of Targeted Therapy. Journal of Immunology and Clinical Microbiology, Cilt: 11 Sayı: 2, 99–105. https://doi.org/10.58854/jicm.1933327

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References (12)

  1. Lin, J. N., Lai, C. H., Yang, C. H., & Huang, Y. H. (2019). Elizabethkingia Infections in Humans: From Genomics to Clinics. Microorganisms, 7(9), 295. https://doi.org/10.3390/microorganisms7090295
  2. Davarcı, İ., Koçoğlu, M. E., Duyu, M., & Taşçılar, M. O. (2018). Trakeal aspirat örneğinden izole edilen nadir bir etken: Elizabethkingia meningoseptica. Anadolu Klinikleri Tıp Bilimleri Dergisi, 23(2), 97–101.
  3. Ma, S., Gong, Y., Luo, X., Peng, Y., Zhang, C., Zhang, X., Hu, X., Tang, P., Yuan, Z., Luo, G., & Li, H. (2023). Emerging Prevalence and Clinical Features of Elizabethkingia meningoseptica Infection in Southwest China: A 9-Year Retrospective Study and Systematic Review. Infection and drug resistance, 16, 531–543. https://doi.org/10.2147/IDR.S397051
  4. Huang C. (2024). Antimicrobial Susceptibility Patterns and Antimicrobial Therapy of Infections Caused by Elizabethkingia Species. Medicina (Kaunas, Lithuania), 60(12), 1990. https://doi.org/10.3390/medicina60121990
  5. Govindaswamy, A., Bajpai, V., Trikha, V., Mittal, S., Malhotra, R., & Mathur, P. (2018). Multidrug resistant Elizabethkingia meningoseptica bacteremia - Experience from a level 1 trauma centre in India. Intractable & rare diseases research, 7(3), 172–176. https://doi.org/10.5582/irdr.2018.01077
  6. European Committee on Antimicrobial Susceptibility Testing (EUCAST). (2023). Breakpoint tables for interpretation of MICs and zone diameters (Version 13.0). https://www.eucast.org/clinical_breakpoints/
  7. Umair, A., & Nasir, N. (2021). Clinical features and outcomes of critically ill patients with Elizabethkingia meningoseptica: an emerging pathogen. Acute and critical care, 36(3), 256–261. https://doi.org/10.4266/acc.2020.01158
  8. Feng, M., Huang, M., Fan, Y., Liu, G., Zhou, S., & Zhou, J. (2024). Clinical Characteristics and Risk Factors for Infection and Death in Critically Ill Patients with Pulmonary Infection with Elizabethkingia Spp. Infection and drug resistance, 17, 2673–2683. https://doi.org/10.2147/IDR.S460640
  9. Hsu, M. S., Liao, C. H., Huang, Y. T., Liu, C. Y., Yang, C. J., Kao, K. L., & Hsueh, P. R. (2011). Clinical features, antimicrobial susceptibilities, and outcomes of Elizabethkingia meningoseptica (Chryseobacterium meningosepticum) bacteremia at a medical center in Taiwan, 1999-2006. European journal of clinical microbiology & infectious diseases: official publication of the European Society of Clinical Microbiology, 30(10), 1271–1278. https://doi.org/10.1007/s10096-011-1223-0
  10. Clinical and Laboratory Standards Institute (CLSI). (2023). Performance Standards for Antimicrobial Susceptibility Testing (33rd ed., CLSI supplement M100). Clinical and Laboratory Standards Institute.
  11. Altıntaş, A., Çetin, C., Yükselmiş, U., Karaaslan, A., Demir Tekol, S., & Akın, Y. (2022). Elizabethkingia meningoseptica bacteremia in a child: A case report. Southern Clinics of Istanbul Eurasia, 33(4), 448–450. https://doi.org/10.14744/scie.2022.25428
  12. Hsu, M. S., Liao, C. H., Huang, Y. T., Liu, C. Y., Yang, C. J., Kao, K. L., & Hsueh, P. R. (2011). Clinical features, antimicrobial susceptibilities, and outcomes of Elizabethkingia meningoseptica (Chryseobacterium meningosepticum) bacteremia at a medical center in Taiwan, 1999-2006. European journal of clinical microbiology & infectious diseases: official publication of the European Society of Clinical Microbiology, 30(10), 1271–1278. https://doi.org/10.1007/s10096-011-1223-0