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Identification of serogroups of beta hemolytic streptococci in children with tonsillo-pharyngitis

J Ahmed1, M M Zaman, S M Keramat Ali

  • 1National Center for Control of Rheumatic Fever and Heart Discases, Sher-e-Bangla Nagar, Dhaka.

Bangladesh Medical Research Council Bulletin
|April 1, 2004
PubMed

Insights

Beta-hemolytic streptococcal throat infections are common in Bangladeshi children. Group G strains, not just Group A, are prevalent and require attention for preventing rheumatic fever and glomerulonephritis.

Area of Science:

  • Microbiology
  • Epidemiology
  • Pediatrics

Background:

  • Rheumatic fever and post-streptococcal glomerulonephritis are significant health concerns in Bangladeshi children.
  • The epidemiology of beta-hemolytic streptococci, particularly Group A, is crucial for understanding these sequelae.
  • Limited data exists on beta-hemolytic streptococci prevalence in Bangladesh.

Purpose of the Study:

  • To determine the prevalence of beta-hemolytic streptococcal throat infections in school children in Narayangonj, Bangladesh.
  • To identify the specific groups of beta-hemolytic streptococci causing tonsillo-pharyngitis.

Main Methods:

  • A cross-sectional study involving 6890 school children.
  • Throat swab cultures were collected from 2175 children with tonsillo-pharyngitis.
  • Isolates were identified and categorized by group (A, B, C, G).

Main Results:

  • Beta-hemolytic streptococci were isolated from 428 children.
  • Group G strains were the most prevalent (74.0%), followed by Group A (21.5%).
  • Groups B (1.2%) and C (3.3%) were less common.

Conclusions:

  • Group G beta-hemolytic streptococci are predominant in school children with tonsillo-pharyngitis in this region.
  • Public health strategies should address both Group A and Group G streptococcal infections.
  • Further research into M serotypes is needed to understand pathogenicity.

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