Journals / Aksaray Üniversitesi Tıp Bilimleri Dergisi / 2026 / Cilt: 6 Sayı: 3

Clinical and Laboratory Assessment of Serotype Distribution and Antimicrobial Resistance in Salmonella Isolates from the Aksaray Region: A One-Year Experience

Aksaray Bölgesinden Elde Edilen Salmonella İzolatlarında Serotip Dağılımı ve Antimikrobiyal Direncin Klinik ve Laboratuvar Değerlendirmesi: Bir Yıllık Deneyim

Firdevs Güvenç(Aksaray eğitim ve araştırma hastanesi)0000-0002-3522-3293
Yücel Duman(AKSARAY UNIVERSITY, SCHOOL OF MEDICINE, DEPARTMENT OF BASIC MEDICAL SCIENCES (MEDICINE), DEPARTMENT OF MEDICAL MICROBIOLOGY (MEDICINE))0000-0002-9090-2096
Pages
83–88
Publication Date
2026-09-10
DOI
—
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AI Summary & Key Takeaways

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

Typhi underscore the need for strengthened regional surveillance and updated empirical treatment strategies.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: This study aimed to evaluate the serotype distribution, clinical characteristics, and antimicrobial susceptibility profiles of Salmonella isolates recovered from clinical specimens submitted to the Microbiology Laboratory of Aksaray Training and Research Hospital throughout 2025Material and Method: A total of six Salmonella isolates were analyzed.
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Key Findings & Data:Antimicrobial susceptibility testing was interpreted according to EUCAST 2025 criteria.
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Conclusion & Impact:Typhi underscore the need for strengthened regional surveillance and updated empirical treatment strategies.
🔬Design:Review & Systematic Survey
📍Scope:2025 Verileri
⚙️Variables:Antimikrobiyal direnç · non-tifoidal Salmonella · S. Typhi

Abstract

Aim: This study aimed to evaluate the serotype distribution, clinical characteristics, and antimicrobial susceptibility profiles of Salmonella isolates recovered from clinical specimens submitted to the Microbiology Laboratory of Aksaray Training and Research Hospital throughout 2025Material and Method: A total of six Salmonella isolates were analyzed. Serotyping was performed by the National Reference Laboratory. Antimicrobial susceptibility testing was interpreted according to EUCAST 2025 criteria. Demographic and clinical data were retrospectively reviewed Results: Four distinct serotypes were identified: S. Typhi (n=2), S. Enteritidis (n=2), S. Typhimurium (n=1), and S. Hadar (n=1). The two S. Typhi isolates were recovered from blood cultures of patients living in the same household and detected two months apart, suggesting potential household transmission. Both isolates exhibited resistance to ampicillin, ciprofloxacin, and ceftriaxone. Among non-typhoidal Salmonella (NTS) isolates, ampicillin resistance was 66%, while all isolates remained susceptible to trimethoprim–sulfamethoxazole. Ciprofloxacin resistance among NTS isolates was 50%. Clinically, NTS infections presented with mild-to-moderate gastrointestinal symptoms, whereas S. Typhi infections were associated with systemic involvement and prolonged hospitalization. Conclusion: This study indicates ongoing Salmonella serotype diversity in Aksaray region and highlights notable antimicrobial resistance, particularly the detection of two multidrug-resistant S. Typhi isolates from the same household. The increasing fluoroquinolone resistance in NTS isolates and the unusual ceftriaxone resistance in S. Typhi underscore the need for strengthened regional surveillance and updated empirical treatment strategies.

Özet

Amaç: Bu çalışmada, 2025 yılı boyunca Aksaray Eğitim ve Araştırma Hastanesi Mikrobiyoloji Laboratuvarına gönderilen klinik örneklerden izole edilen Salmonella izolatlarının serotip dağılımı, klinik özellikleri ve antimikrobiyal duyarlılık profillerinin değerlendirilmesi amaçlanmıştır. Yöntem: Toplam altı Salmonella izolatı incelenmiştir. Serotiplendirme Türkiye Halk Sağlığı Genel Müdürlüğü Mikrobiyoloji Referans Laboratuvarı tarafından yapılmıştır. Antimikrobiyal duyarlılık testleri EUCAST 2025 kriterlerine göre yorumlanmıştır. Hastaların demografik ve klinik verileri geriye dönük olarak değerlendirilmiştir. Bulgular: Çalışmada dört farklı serotip saptanmıştır: S. Typhi (n=2), S. Enteritidis (n=2), S. Typhimurium (n=1) ve S. Hadar (n=1). İki S. Typhi izolatı, aynı hanede yaşayan iki hastadan ve iki ay arayla alınan kan kültürlerinden elde edilmiştir. Her iki S. Typhi izolatı da ampisilin, siprofloksasin ve seftriaksona direnç göstermiştir. Non-tifoidal Salmonella (NTS) izolatları arasında ampisilin direnci %66 olup tüm izolatlar trimetoprim–sülfametoksazole duyarlı bulunmuştur. NTS izolatlarında siprofloksasin direnci %50 olarak saptanmıştır. Klinik olarak NTS olguları hafif–orta şiddette gastrointestinal yakınmalarla seyretmiş, S. Typhi olguları ise sistemik bulgular ve uzamış yatış süreleri ile karakterize olduğu belirlenmiştir. Sonuç: Aksaray bölgesinde Salmonella serotip çeşitliliğinin sürdüğü ve antimikrobiyal direncin dikkat çekici düzeyde olduğu görülmüştür. Aynı hanede iki ay arayla tespit edilen iki çoklu dirençli S. Typhi izolatı, bölgesel sürveyansın güçlendirilmesi gerekliliğini göstermektedir. Artan fluorokinolon direnci ve olağandışı seftriakson direnci, bölgesel ampirik tedavi yaklaşımlarının güncellenmesi ihtiyacını vurgulamaktadır.

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Cite This Article

Güvenç, F., Duman, Y. (2026). Clinical and Laboratory Assessment of Serotype Distribution and Antimicrobial Resistance in Salmonella Isolates from the Aksaray Region: A One-Year Experience. Aksaray Üniversitesi Tıp Bilimleri Dergisi, Cilt: 6 Sayı: 3, 83–88. https://ajindex.com/articles/1447357

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