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Pneumococcosuria in children.

M A Miller1, B S Kaplan, S Sorger

  • 1Department of Microbiology, Montreal Children's Hospital, McGill University, Quebec, Canada.

Journal of Clinical Microbiology
|January 1, 1989
PubMed
Summary
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Streptococcus pneumoniae in urine cultures (pneumococcosuria) is uncommon in children and likely indicates contamination, not urinary tract infection or bacteremia. This finding suggests perineal colonization is the probable source.

Area of Science:

  • Pediatric Infectious Diseases
  • Clinical Microbiology
  • Urology

Background:

  • Streptococcus pneumoniae is a common pathogen, but its presence in pediatric urine cultures is infrequently reported.
  • Understanding the significance of pneumococcosuria in children is crucial for accurate diagnosis and management.

Purpose of the Study:

  • To investigate the incidence and clinical significance of Streptococcus pneumoniae in pediatric urine cultures.
  • To determine if pneumococcosuria is associated with urinary tract infections (UTIs) or invasive pneumococcal disease.

Main Methods:

  • Retrospective analysis of pediatric urine cultures over a 4-year period.
  • Review of clinical data for children with positive urine cultures for S. pneumoniae.
  • Correlation of pneumococcosuria with symptoms, other microbial findings, and potential sources.

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Main Results:

  • S. pneumoniae was found in 0.08% of 53,499 pediatric urine cultures, primarily in females (96%) with a median age of 3 years.
  • In most cases (77%), S. pneumoniae was found with other organisms, and bacterial counts were generally low (<10^5 CFU/ml).
  • No association was found between pneumococcosuria, genitourinary symptoms, pneumococcal bacteremia, or invasive disease.

Conclusions:

  • Pediatric pneumococcosuria is rare and typically not indicative of a UTI or systemic infection.
  • The presence of S. pneumoniae in urine likely represents contamination from perineal colonization.
  • This finding supports a non-infectious etiology for most cases of pediatric pneumococcosuria.