Shigella flexneri 1c bacteremia in a child: a case report

Mehrzad Sadredinamin1, Zohreh Ghalavand1, Maryam Rostamyan2

  • 1Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Gut Pathogens
|February 14, 2026
PubMed

Insights

Shigella flexneri serotype 1c caused dysentery and bacteremia in a young child. Early diagnosis and appropriate antibiotics like gentamicin and ciprofloxacin are crucial for managing this rare but serious complication.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Pediatrics

Background:

  • Shigellosis is a major public health concern in developing nations, disproportionately affecting children under five.
  • While typically causing gastrointestinal illness, Shigella can lead to rare but severe complications like bacteremia, especially in young children.
  • This case highlights a rare instance of Shigella flexneri serotype 1c-induced dysentery followed by bacteremia.

Purpose of the Study:

  • To report a case of Shigella flexneri serotype 1c bacteremia in a young child.
  • To emphasize the importance of considering Shigella bacteremia in pediatric cases of severe dysentery.
  • To underscore the need for characterizing virulence factors in Shigella species causing bacteremia.

Main Methods:

  • A 13-month-old child presented with symptoms of fever, dysentery, abdominal distension, and dehydration.
  • Initial empirical treatment with ceftriaxone was ineffective.
  • The patient was successfully treated with a combination of gentamicin and ciprofloxacin.

Main Results:

  • The patient was diagnosed with Shigella flexneri serotype 1c infection.
  • This marks the first reported case in Iran of S. flexneri serotype 1c with specific virulence genes (ipaB, ipaC, ipaD, ipaH, ipgD, virA, sen).
  • Successful treatment was achieved with gentamicin and ciprofloxacin.

Conclusions:

  • Clinicians should consider Shigella bacteremia in young children presenting with severe dysentery.
  • Prompt and accurate diagnosis is vital for improving patient outcomes and reducing mortality.
  • Further research is needed to understand the role of Shigella virulence genes in the pathogenesis of bacteremia.
Abstract

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