[Antibiotic sensitivity and serotypes of group A hemolytic streptococci isolated from clinical specimens and healthy pupils in Japan, 1986-1988].
As an epidemiological survey for streptococcal infection, antibiotic sensitivity test and T-serotyping were made on 2,735 strains of group A hemolytic streptococci isolated from clinical specimens and healthy pupils between 1986 through 1988 in Japan. Most dominant serotype in clinical isolates was T-4 (26.8%) and it was followed T-12 (25.5%), T-1 (11.2%) and T-3 (8.5%), on the other hand, dominant serotypes of the isolates from healthy pupils were T-12 (30.4%), T-1 (19.3%), T-4 (15.3%) and T-28 (13.4%). All of the isolates tested were sensitive to the beta-lactam antibiotics which was found as same as consequence of the previous surveys. However 36.4% to tetracycline, 2.1% to chloramphenicol and 1.4% to oleandomycin of the clinical isolates were resistant. Similarly, 16.2% to tetracycline, 2.3% to chloramphenicol 1.7% to oleandomycin, of the isolates from healthy pupils were resistant. Multi-resistant strains were found 1.4% in clinical isolates and 1.7% in the isolates from healthy pupils. Relation between distribution of multiresistant strain and T-serotypes was found. In T-12, multiresistant strains were encountered at a relatively high rate compared with other serotypes, representing 3.5% in clinical isolates and 5.6% in the isolates from healthy pupils. However this tendency was decreased than previous surveys, while incidence of tetracycline resistant strains in T-4 remained at high level, representing about 94% as same as in the past.
Endo
M
M
Tokyo Metropolitan Research Laboratory of Public Health.
Kashiwagi
Y
Y
Okuno
R
R
Amano
Y
Y
Onogawa
T
T
D000293:Adolescent; D000328:Adult; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D007769:Lactams; D008297:Male; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D010614:Pharynx / Q000382:microbiology*; D012703:Serotyping; D013290:Streptococcal Infections / Q000453:epidemiology / Q000382:microbiology*; D013297:Streptococcus pyogenes / Q000145:classification / Q000187:drug effects / Q000302:isolation & purification*
D000900:Anti-Bacterial Agents; D007769:Lactams