title: Lactational mastitis caused by Streptococcus lactarius.
abstract: Human infections caused by Streptococcus lactarius have not been previously reported. In the present report, we describe a lactational mastitis caused by this organism. The infection occurred in a 28-year-old breast-feeding female, with a 10-days history of moderate pain on the right breast. The patient was cured after antibiotic treatment with levofloxacin for 21 days. Our case shows that S. lactarius should be considered as a cause of lactational mastitis. The introduction of molecular microbiology techniques can be extremely useful for knowing the implication of streptococci in lactational mastitis.
authors.affiliation: Section of Microbiology, University Hospital of Guadalajara, Guadalajara, Spain. Electronic address: danielt@sescam.jccm.es.
authors.forename: Daniel
authors.initials: D
authors.lastname: Tena
authors.affiliation: Section of Microbiology, University Hospital of Guadalajara, Guadalajara, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Fernández
authors.affiliation: Health Center of Cabanillas del Campo, Guadalajara, Spain.
authors.forename: Beatriz
authors.initials: B
authors.lastname: López-Garrido
authors.affiliation: Health Center of Cabanillas del Campo, Guadalajara, Spain.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Pérez-Balsalobre
authors.affiliation: Section of Microbiology, University Hospital of Guadalajara, Guadalajara, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Losa
authors.affiliation: Service of Bacteriology, National Reference Laboratory of Majadahonda, Madrid, Spain.
authors.forename: María José
authors.initials: MJ
authors.lastname: Medina-Pascual
authors.affiliation: Service of Bacteriology, National Reference Laboratory of Majadahonda, Madrid, Spain.
authors.forename: Juan Antonio
authors.initials: JA
authors.lastname: Sáez-Nieto
mesh_terms: D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D005260:Female; D006801:Humans; D064704:Levofloxacin / Q000627:therapeutic use; D008413:Mastitis / Q000188:drug therapy / Q000209:etiology* / Q000382:microbiology / Q000473:pathology*; D025202:Molecular Diagnostic Techniques; D013290:Streptococcal Infections / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology / Q000473:pathology*; D013291:Streptococcus / Q000145:classification* / Q000302:isolation & purification*; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents; D064704:Levofloxacin
keywords: Breast infection; Lactation; Lactational mastitis; Streptococcus lactarius; Streptococcus spp