title: [Recurrent infection by Streptococcus agalactiae].
abstract: BACKGROUND
  To study the factors implicated in the infectious process (host, microorganism and antibiotic) of a newborn early sepsis by S. agalactiae that suffered a reactivation at day five from discharge.
  
  
  METHODS
  Description of two episodes of newborn sepsis by S. agalactiae corresponding to the same patient and microbiologic study of the isolated strain: typing by "genomic macrorestriction" and antibiotic tolerance by "timed killing curves".
  
  
  RESULTS
  It was demonstrated that both strains of S. agalactiae type la/c belonged to the same clone as well as the tolerance to ampicillin of the strain.
  
  
  CONCLUSIONS
  This sort of infections processes in the newborn are very serious and there is possibility of relapse. Thus, it is important to study the ethiologic agent and its relationship with antibiotics, in order to stablish the best treatment regimes, avoiding the possibility of relapses as the case we have described.
authors.affiliation: Servicio de Pediatría, Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona.
authors.forename: M T
authors.initials: MT
authors.lastname: García
authors.forename: T
authors.initials: T
authors.lastname: Juncosa
authors.forename: Y
authors.initials: Y
authors.lastname: Jordán
authors.forename: A
authors.initials: A
authors.lastname: González
authors.forename: P
authors.initials: P
authors.lastname: Coll
authors.forename: C
authors.initials: C
authors.lastname: Latorre
mesh_terms: D000328:Adult; D000667:Ampicillin / Q000494:pharmacology / Q000627:therapeutic use; D000668:Ampicillin Resistance; D016470:Bacteremia / Q000151:congenital / Q000188:drug therapy / Q000382:microbiology*; D002439:Cefotaxime / Q000627:therapeutic use; D004359:Drug Therapy, Combination / Q000627:therapeutic use; D005260:Female; D005839:Gentamicins / Q000627:therapeutic use; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D016920:Meningitis, Bacterial / Q000151:congenital / Q000188:drug therapy / Q000382:microbiology*; D010614:Pharynx / Q000382:microbiology; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000382:microbiology; D012008:Recurrence; D013290:Streptococcal Infections / Q000151:congenital / Q000188:drug therapy / Q000382:microbiology*; D013292:Streptococcus agalactiae / Q000187:drug effects / Q000302:isolation & purification; D014621:Vagina / Q000382:microbiology
chemical_list: D005839:Gentamicins; D000667:Ampicillin; D002439:Cefotaxime
vernacular_title: Infección recidivante por Streptococcus agalactiae.