Streptococcus pyogenesis most
popularpathogen caused respiratory tract infection disease. This study was
conducted to find out the recent clinical characteristics of Streptococcus
pyogenes isolates from respiratory tract at Japanese hospital in 2014. Streptococcus
pyogenes was identified by standard laboratory procedure. Antimicrobial
susceptibility testing was performed by micro dilution assay according to CLSI
recommendation. Respiratory tract isolates were defined as isolation from
pharynx, nasal discharge, tonsillar, and sputum. Total one hundred sixty-one Streptococcus
pyogenes were isolated among which 136 were from respiratory tract and 25 were
from non- respiratory tract. Respiratory tract-associated Streptococcus
pyogenes was isolated among which 102 were from male and 59 were from female. The
age incidence among 0 - 1 years age group was 8, among 1 - 18 years age group,
131 (p < 0.01), among 19 - 64 years age group, 17 (p < 0.01), and in 65-years
it was 5. Although we investigated the relationship between season and bacterial
isolation, we did not find any significant differences between respiratory
tract and no respiratory tract isolation. However, our study revealed that
clarithromycin was less antimicrobial effective in respiratory tract disease
than in no respiratory tract disease significantly (p < 0.01). Although
several antibiotics such as penicillin are still effective against Streptococcus
pyogenes, incidence of Streptococcus pyogenes infection is not decreasing
worldwide. Our study suggests the need for continuous epidemiological
surveillance of Streptococcus pyogenes.
Cite this paper
Minami, M. , Sakakibara, R. , Imura, T. , Watanabe, M. , Morita, H. , Kanemaki, N. and Ohta, M. (2015) Clinical Characteristics of Respiratory Tract-Associated Streptococcus pyogenes at General Japanese Hospital in 2014. Journal of Biosciences and Medicines
, 26-31. doi: 10.4236/jbm.2015.312005
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