For bacteriological studies on upper respiratory infection in pediatric age, samples by nasopharyngeal swabs in 60 cases of rhinitis group, oropharyngeal swabs in 59 cases of pharyngitis-tonsillitis group and 46 cases of laryngitis group and naso-and oropharrngeal swabs in 59 cases of control group were collected at the outpatient departmrnt of pediatrics, Chung-Buk Medical Center and Chung-Nam National University Hospital from January, 1982 to October, 1982.
Bacteriological studies according to each clinical group and age were made. Antibiotics sensitivity test and clinical manifestation according to potential pathogenic bacteria were evaluated.
Theresultsaresummarizedasfollows:
1. Incidence of significant Potential bacterial pathogen was 32% in URI patients and 17% in the control group.
2. The order of potential bacteria isolated from rhinitis patients was Staphylococcus aureus, Pneumococcus, H. influenza, and H. aphrophilus. Staphylococcus aureus were cultured more in the younger age group. H. influenza were cultured highly in ages of 2-5years, and Pneumococcus were cultured from children over 2 years of age.
3. The order of potential bacteria isolated from phayngitis tonsillitis group was beta-hemolytic Streptococcus and Pneumococcus. Beta-hemolytic Streptococcus were cultured highly over 2years of age, but Pneumococcus had no difference according to age.
4. Main potential bacteria isolated from laryngitis was H. influenza which was cultured highly in the 2-5year old group.
5. Symptoms of rhinitis and pharyngotonsillitis in Staphylococcus and Pneumococcus, of pharyngitis-tonilltis accmopanied with high fever in beta-hemolytic Steptococcus and of laryngitis and rhiniis in H. influenza were noted.
6. Antlbiotics sensitivity by the disc method show as follows :
Novobiocin, CM, Neomycin & Cephalosporin in Staphylococcus aureus : CM in Staphylococcus epidemidis : Penicillin, EM, Novobiocin, CM and Lincomycin in beta-hemolytic Streptococcus;CM in Strepteptococcus ´viridans : Penicillin, Ampicillin, Doxicycline in Pneumococcus and Penicillin, Novobiocin and CM in Neisseria were highly sensitive antibiotics.
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