Volume 19, Number 7—July 2013
Dispatch
Multidrug-Resistant Atypical Variants of Shigella flexneri in China
Table 1
Distribution of different Shigella spp. in China during 2008–2010 and 1991–2000
Serotype | 1991–2000* |
May 2008–December 2010 |
|
---|---|---|---|
No. (%) isolates | No. (%) isolates | ||
S. flexneri | 8,082 (86.2) | 208 (76.2) | |
1a | 272 (2.9) | 9 (3.3) | |
1b | 325 (3.5) | 29 (10.6) | |
1c | 15 (0.2) | 0 | |
2a | 6,468 (69.0) | 64 (23.4) | |
2b | 152 (1.6) | 3 (1.1) | |
3a | 255 (2.7) | 0 | |
3b | 57 (0.6) | 0 | |
3c | 9 (0.1) | 0 | |
4 | 230 (2.5) | 0 | |
5 | 30 (0.3) | 1 (0.4) | |
6 | 73 (0.8) | 3 (1.1) | |
x | 70 (0.7) | 5 (1.8) | |
y | 126 (1.3) | 2 (0.7) | |
X variant (−:7,8, E1037), indole-negative variety |
0 |
73 (26.7) |
|
S. flexneri serotype 2 variant (II:3,4,7,8) |
0 |
17 (6.2) |
|
S. flexneri untypeable variant (−:E1037) |
0 |
2 (0.7) |
|
S. sonnei |
1,022 (10.9) |
56 (20.5) |
|
S. dysenteriae |
132 (1.4) |
6 (2.2) |
|
S. boydii | 139 (1.5) | 3 (1.1) |
*Data are from (1).
References
- World Health Organization. Diarrhoeal disease; fact sheet no. 330, April 2013 [cited 2013 Apr 12]. http://www.who.int/mediacentre/factsheets/fs330/en/index.html
- World Health Organization. Guidelines for the control of shigellosis, including epidemics due to Shigella dysenteriae type 1 [cited 2013 Apr 12]. http://www.who.int/maternal_child_adolescent/documents/9241592330/en/index.html
- Clinical and Laboratory Standards Institute. Performance standards for antimicrobial disk susceptibility tests; approved standard, 11th ed. CLSI document M02-A11. Wayne, PA: The Institute; 2012 [cited 2013 Apr 12]. http://antimicrobianos.com.ar/ATB/wp-content/uploads/2012/11/01-CLSI-M02-A11-2012.pdf
- EcMLST, a multilocus sequence typing database system for pathogenic E. coli. Version 1.2 [cited 2013 Apr 12]. http://www.shigatox.net/ecmlst/cgi-bin/index
- Pryamukhina NS, Khomenko NA. Suggestion to supplement Shigella flexneri classification scheme with the subserovar Shigella flexneri 4c: phenotypic characteristics of strains. J Clin Microbiol. 1988;26:1147–9 .PubMed
- Harris AM, Chowdhury F, Begum YA, Khan AI, Faruque AS, Svennerholm AM, Shifting prevalence of major diarrheal pathogens in patients seeking hospital care during floods in 1998, 2004, and 2007 in Dhaka, Bangladesh. Am J Trop Med Hyg. 2008;79:708–14 .PubMed
1These authors contributed equally to this article.
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