Related Experiment Video
Updated: Mar 23, 2026

Enrichment and Detection of Clostridium perfringens Toxinotypes in Retail Food Samples
Published on: October 18, 2019
Clostridium Perfringens Infection in a Febrile Patient with Severe Hemolytic Anemia
Masamitsu Hashiba1, Atsutoshi Tomino1, Nobuyoshi Takenaka1
1Department of Emergency and Acute Intensive Care Medicine, Aichi Medical University, Nagakute, Japan.
Background:
Clostridium perfringens (C. perfringens) can cause various infections, including gas gangrene, crepitant cellulitis, and fasciitis. While C. perfringens sepsis is uncommon, it is often rapidly fatal because the alpha toxin of this bacterium induces massive intravascular hemolysis by disrupting red blood cell membranes.
Case Report:
We present the case of a male patient with diabetes who developed a fatal liver abscess with massive intravascular hemolysis and septic shock caused by toxigenic C. perfringens. The peripheral blood smear showed loss of central pallor, with numerous spherocytes. Multiplex PCR only detected expression of the cpa gene, indicating that the pathogen was C. perfringens type A.
Conclusions:
C. perfringens infection should be considered in a febrile patient who has severe hemolytic anemia with a very low MCV, hemolyzed blood sample, and negative Coombs test. The characteristic peripheral blood smear findings may facilitate rapid diagnosis.
Insights
Clostridium perfringens sepsis, though rare, can be fatal due to alpha toxin-induced hemolysis. Early recognition of specific blood smear findings in febrile patients aids diagnosis.
Area of Science:
- Microbiology
- Hematology
- Infectious Diseases
Background:
- Clostridium perfringens (C. perfringens) causes infections like gas gangrene.
- C. perfringens sepsis is rare but often fatal due to alpha toxin-induced intravascular hemolysis.
Observation:
- A diabetic male developed a fatal liver abscess with septic shock from toxigenic C. perfringens.
- Peripheral blood smear revealed spherocytes and loss of central pallor.
- Multiplex PCR confirmed C. perfringens type A (cpa gene expression).
Findings:
- Massive intravascular hemolysis and septic shock were key features.
- The patient presented with severe hemolytic anemia, low MCV, and a negative Coombs test.
- Characteristic peripheral blood smear findings, including spherocytes, were noted.
Implications:
- C. perfringens infection should be suspected in febrile patients with severe hemolytic anemia and specific blood smear morphology.
- Rapid diagnosis can be facilitated by recognizing these characteristic peripheral blood findings.
- Prompt identification is crucial for managing this rapidly fatal condition.
Related Concept Videos
Staphylococcal Skin Infections
Increased Body Temperature
Bacterial Phylum Spirochaetes
Acute Pyelonephritis II: Diagnostic Studies and Management
Bacterial Gastroenteritis

