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Volume 16, Number 11—November 2010

Dispatch

Prevalence and Genetic Structures of Streptococcus pneumoniae Serotype 6D, South Korea

Eun Hwa Choi, Hoan Jong LeeComments to Author , Eun Young Cho, Chi Eun Oh, Byung Wook Eun, Jina Lee, and Min Ja Kim
Author affiliations: Seoul National University Children’s Hospital, Seoul, South Korea (E.H. Choi, H.J. Lee, E.Y. Cho, C.E. Oh, B.W. Eun); Seoul National University College of Medicine, Seoul (E.H. Choi, H.J. Lee); Kosin University College of Medicine, Busan, South Korea (C.E. Oh); Gachon University Gil Hospital, Incheon, South Korea (B.W. Eun); Seoul National University Bundang Hospital, Seongnam, South Korea (J. Lee); Korea University College of Medicine, Seoul (M.J. Kim)

Main Article

Table

Genetic structures and phenotypes of 14 strains of Streptococcus pneumoniae serotype 6D, Seoul, South Korea*

CC or ST and year of isolation Patient age Sample source MIC, μg/mL
Macrolide resistance gene
Penicillin Cefotaxime mefA ermB
CC81







ST189
2000 5 y Throat swab 1.50 0.75 Present Absent
2004 81 y Sputum 2.00 1.00 Present Absent
2006 1 y Sputum 1.50 1.00 Present Absent
2006 2 y Sputum 1.00 0.75 Present Absent
2007 5 y Sputum 1.50 0.75 Present Absent
2007 6 y Nasopharynx 1.50 0.75 Present Absent
2007 73 y Blood 2.00 1.00 Present Absent
  ST282
  2004 4 mo Sputum 1.50 0.75 Present Absent
  2005 8 mo Nasopharynx 1.50 0.75 Present Absent
  2005
9 mo
Sputum
1.50
0.75

Present
Absent
ST3171
  1996 1 y Blood 0.06 0.05 Absent Present
  1997 3 y Blood 0.06 0.50 Absent Present
  1997 14 y Blood 0.06 0.50 Absent Present
  1997 15 y Blood 0.06 0.50 Absent Present

*CC, clonal complex; ST, sequence type. Antimicrobial drug susceptibility testing, detection of mefA/ermB, multilocus sequence typing, and eBURST analyses were performed as described (13). All strains were resistant to at least 3 antimicrobial drug classes.

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