Volume 29, Number 3—March 2023
CME ACTIVITY - Research
Clonal Expansion of Multidrug-Resistant Streptococcus dysgalactiae Subspecies equisimilis Causing Bacteremia, Japan, 2005–2021
Koh Shinohara, Kazunori Murase, Yasuhiro Tsuchido, Taro Noguchi, Satomi Yukawa, Masaki Yamamoto, Yasufumi Matsumura, Ichiro Nakagawa, and Miki Nagao
Table 5
Prevalence of antimicrobial resistance determinant genes and Tn916-like integrative and conjugative elements among Streptococcus dysgalactiae subspecies equisimilis clonal complexes and sequence types, Japan, 2005–2021*
| CC or ST | ermB | ermA | mef(A/E) | tetM | tetL | Tn916-like ICE |
|---|---|---|---|---|---|---|
| CC17, n = 50 | 2 (4.0) | 7 (14.0) | 0 | 2 (4.0) | 0 | 2 (4.0) |
| CC25, n = 41 | 12 (29.3) | 0 | 0 | 18 (43.9) | 0 | 17 (41.5) |
| ST525, n = 16 | 16 (100) | 0 | 0 | 16 (100) | 0 | 16 (100) |
| CC29, n = 13 | 0 | 1 (7.7) | 0 | 0 | 0 | 0 |
| Others, n = 26 | 0 | 5 (19.2) | 5 (19.2) | 10 (38.5) | 2 (7.7) | 3 (11.5) |
| Total, n = 146 | 30 (20.5) | 13 (8.9) | 5 (3.4) | 46 (31.5) | 2 (1.4) | 38 (26.0) |
*Values are no. (%) isolates. CC, clonal complex; ICE, integrative and conjugative element; ST, sequence type.
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