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Updated: Aug 18, 2026

Antigen-Capture Enzyme-Linked Immunosorbent Assay for Specific Detection of Mycoplasma pneumoniae
Published on: February 24, 2023
Mycoplasma pneumoniae infection associated with hemolytic anemia--report of one case
Jinn-Li Wang1, Man-Yau Ho, Ein-Yiao Shen
1Department of Pediatrics, Taipei Medical University, Wan-Fang Hospital, Taipei, Taiwan. jlwang@wanfang.gov.tw
Abstract:
Immune hemolytic anemia is a rare condition in childhood. Cold agglutinins have been implicated in the etiology of the hemolysis. However, cold agglutinins may occur in various infections, such as mycoplasma pneumoniae and infectious mononucleosis. In children, especially of preschool age, mycoplasma pneumoniae very commonly cause respiratory tract infection, but inducing an immune hemolytic anemia is exceptional. We present here a case of cold agglutinin-related severe hemolytic anemia (Hb = 3.8 gm/dl) secondary to mycoplasma pneumoniae infection who recovered completely after blood transfusion, intravenous immunoglobulin (IVIG) and medical treatment with erythromycin. It is suggested that even though very rare, mycoplasma pneumoniae may induce the occurrence of cold agglutinins and cause immune hemolytic anemia.
Insights
Mycoplasma pneumoniae rarely causes immune hemolytic anemia in children. This case highlights a severe cold agglutinin-induced hemolytic anemia in a child, successfully treated with transfusion, IVIG, and erythromycin.
Area of Science:
- Pediatrics
- Hematology
- Infectious Diseases
Background:
- Immune hemolytic anemia is a rare pediatric condition.
- Cold agglutinins are implicated in hemolysis, often associated with infections like Mycoplasma pneumoniae.
- Mycoplasma pneumoniae commonly causes respiratory infections in children, but inducing hemolytic anemia is exceptional.
Observation:
- A case of severe cold agglutinin-related hemolytic anemia (Hb = 3.8 gm/dl) in a child secondary to Mycoplasma pneumoniae infection is presented.
- The patient experienced significant hemolysis attributed to cold agglutinins.
Findings:
- Mycoplasma pneumoniae infection can exceptionally trigger the production of cold agglutinins.
- This can lead to severe immune hemolytic anemia in pediatric patients.
Implications:
- Clinicians should consider Mycoplasma pneumoniae as a rare but potential cause of cold agglutinin-induced hemolytic anemia in children.
- Prompt diagnosis and treatment, including blood transfusion, IVIG, and antibiotics like erythromycin, are crucial for recovery.
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