Increase in the rate of azithromycin-resistant Streptococcus pneumoniae isolates carrying the erm(B) and mef(A) genes in Taiwan, 2006–2010

Table 3 Sequence type and Serotype of azithromycin-resistant Streptococcus pneumoniae isolates with PCR positive for erm(B) / mef(A) genes

ST	No. (%) of isolates	Serotype (no. of isolates)	Related PMEN clone [ [20]] ^**
236	29 (32)	19 F (28), 19A (1)	Taiwan^19F-14/ST236
320	30 (33)	19F (16), 19A (13), 14 (1)	DLV of Taiwan^19F-14/ST236
271	11 (12)	19 F (10), 19A (1)	SLV of Taiwan^19F-14/ST236
81	7 (8)	23 F (2), 23A (1), 6A (4)	Spain^23F-1/ST81
283	2 (2)	19 F (2)	-
8525	2 (2)	19 F (2)	-
Others^*	10 (11)	19 F (4), 19A (3), 23 F (1), 6B (2)	-

ST: Sequence type; PMEN: Pneumococcal molecular epidemiology network.
^*Others (n): ST3111 (1), ST3164 (1), ST6993 (1), ST7123 (1), ST237 (1), ST257 (1), ST3625 (1), ST2993 (1), ST76 (1), new ST (1); DLV, double locus variant; SLV, single-locus variant;
^**PMEN website. Available: http://web1.sph.emory.edu/PMEN/pmen_table2.html.

ISSN: 1471-2334