CASE REPORT article
Front. Med.
Sec. Infectious Diseases: Pathogenesis and Therapy
Volume 12 - 2025 | doi: 10.3389/fmed.2025.1572998
This article is part of the Research TopicDrug Development for Respiratory Infectious Diseases and Related Complications in Other SystemsView all articles
Streptococcus dysgalactiae ssp. dysgalactiae bloodstream infections in patients with breast cancer after radiotherapy and chemotherapy
Provisionally accepted
- 1Department of Pharmacy, Shaoxing Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Shaoxing, China
- 2Shaoxing Hospital of Traditional Chinese Medicine, shaoxing, China
- 3Quzhou Maternity and Child Health Care Hospital, Quzhou, Zhejiang, China
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Bloodstream infections are life-threatening conditions in patients with breast cancer, especially in older individuals. Although the most common risk factor in these patients with tumors is the use of severe neutropenia secondary to myelosuppressive chemotherapy and radiotherapy, other factors are possibly associated with the invasive pathogenicity of microorganisms, including Streptococcus dysgalactiae. Streptococcus dysgalactiae ssp. dysgalactiae (SDSD) has been seemed as both an environmental and contagious pathogen. However, reports of bloodstream infections with SDSD in patients with breast cancer after radiotherapy and chemotherapy are scarce. Here, we report an interesting case of bloodstream infection with SDSD in an older patient with breast cancer after radiotherapy and chemotherapy. A 60-year-old Chinese woman had a history of breast cancer for 2 years. She developed chills and fever after puncturing blood blisters in the mouth, accompanied by fatigue and poor appetite. After 6 days of antimicrobial therapy, the patient made a gradual recovery. Bloodstream infections with SDSD in patients with breast cancer are rare. Therefore, accurate diagnosis and timely treatment can be lifesaving.
Keywords: Streptococcus dysgalactiae ssp. dysgalactiae, bloodstream infections, breast cancer, Streptococcus dysgalactiae, Whole genome sequencing analysis
Received: 08 Feb 2025; Accepted: 06 May 2025.
Copyright: © 2025 Tian, Dong, You, Zhao, Xu, Chen and Fang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Chongmei Tian, Department of Pharmacy, Shaoxing Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Shaoxing, China
Yuejuan Fang, Quzhou Maternity and Child Health Care Hospital, Quzhou, Zhejiang, China
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