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Case Reports in Infectious Diseases
Volume 2018, Article ID 6708614, 4 pages
Case Report

Actinomyces europaeus Isolated from a Breast Abscess in a Penicillin-Allergic Patient

1Foundation Programme, Royal Liverpool University Hospital, Liverpool, UK
2Medical Microbiology Department, Liverpool Clinical Laboratories, Royal Liverpool University Hospital, Liverpool, UK
3Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK

Correspondence should be addressed to Sarah E. White; ku.gro.srotcod@39etihws

Received 2 February 2018; Revised 10 April 2018; Accepted 12 April 2018; Published 20 June 2018

Academic Editor: Raul Colodner

Copyright © 2018 Sarah E. White and Stephen D. Woolley. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This is a case of Actinomyces europaeus in the breast abscess of a penicillin-allergic woman. The mainstay of treatment for actinomycosis is penicillin, and there is a lack of literature describing nonpenicillin treatment options. A 69-year-old woman presented acutely with a breast abscess which was managed with incision and drainage and antibiotic therapy to good response. 21 days after presentation, Actinomyces were grown from the culture of pus, so the patient was recalled and more rigorous treatment and follow-up were initiated. The penicillin allergy led to difficulty in the identification of an appropriate antimicrobial agent that was also logistically feasible to be given on an outpatient IV basis. IV tigecycline followed by oral clarithromycin was found to be effective treatment.