RESUMO
A total of 3,184 paediatric patients with sporadic pharyngitis was studied at King Khalid University Hospital in Riyadh, Saudi Arabia. In addition, 478 children without pharyngitis who were matched for age and sex were included as controls. Group A beta-haemolytic streptococci (beta HS) were detected significantly more often among the children with pharyngitis than among the controls (8.4% vs 2.3%; p < 0.0001). In contrast, total non-group A and group C beta HS were isolated at lower frequency from the sick than control children (0.9% vs 2.5% and 0.2% vs 1.2% respectively; p < 0.01) while other non-group A beta HS such as groups B, G and F were each isolated in similar frequency from both the sick and control children. We conclude that non-group A beta HS appear not to be as important as aetiological agents of sporadic pharyngitis in these children.
Assuntos
Faringite/microbiologia , Infecções Estreptocócicas/epidemiologia , Streptococcus/isolamento & purificação , Adolescente , Estudos de Casos e Controles , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Faringite/complicações , Faringite/epidemiologia , Fatores de Risco , Arábia Saudita/epidemiologiaRESUMO
During a period of ten months, minimum inhibitory concentrations (MICs) to seven antimicrobial agents of 150 clinical isolates of Streptococcus pneumoniae were determined at a teaching hospital in Riyadh, Saudi Arabia. Twenty-two (14.7%) isolates showed relative resistance to penicillin. High-level resistance to penicillin was not observed in any of the isolate. Seventeen (11.3%) isolates were resistant to erythromycin, and 31 (20.7%) to tetracycline. Multiple resistance was observed in 21 (14%) isolates. Decreased resistance to ceftriaxone was also found in two (1.3%) isolates. Isolates with relative resistance to penicillin were significantly associated with higher rates of resistance to other antibiotics than were penicillin-susceptible isolates. This was also true for multiple resistance encountered in both groups.