Streptococcus pyogenes

Braz J Otorhinolaryngol.
2012;78(5):110-5.
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ORIGINAL ARTICLE

BJORL

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Prevalence of β-hemolytic Streptococcus in children with special health care needs
Prevalência de Streptococcus β-hemolítico em crianças portadoras de necessidades especiais

Viviane Martha Santos de Morais1, Alice Ramos Orsi2, Fernanda Cristina de Albuquerque Maranhão3,
Therezita Maria Peixoto Patury Galvão Castro4, Karina Cavalcante Beltrão de Castro2,
Denise Maria Wanderlei Silva5

Keywords: disabled children, down syndrome,
Streptococcus,
Streptococcus pyogenes.

Abstract

Palavras-chave: crianças com deficiência, Streptococcus,
Streptococcus pyogenes, síndrome de down.

Resumo

P

haryngotonsillitis by β-hemolytic Streptococcus mostly affects children and imunocompromissed, being Streptococcus pyogenes (Group A) the most common agent in bacterial pharyngotonsillitis. Aim:
This work targeted the research of β-hemolytic Streptococcus Group-A (SBHGA) and No-A (SBHGNA) in the oropharynx of individuals with special health needs from the APAE (Maceió-AL). Method: A prospective study with oropharynx samples from patients with Down syndrome and other mental disorders (test) and students from a private school (control) aged 5-15 years. Cultures in blood agar
(5%) were identified through Gram/catalase tests and bacitracin/trimethoprim-sulfamethoxazole disk diffusion method, applying the chi-squared statistical analysis. Results: A total of 222 bacterial colonies were isolated in 74 individuals from APAE and 65 in the control group. In the test group, previous episodes of pharyngotonsillitis were reported by 36.49% (27/74) and 9.46% (7/74) were diagnosed with symptoms and/or signs suggestive of oropharynx infection. No positive sample of
S. pyogenes was confirmed at APAE, being all samples classified as SBHGNA, with 5 SBHGA in the control group. Conclusion: The early identification of β-hemolytic