Skip directly to search Skip directly to A to Z list Skip directly to site content
CDC Home

Volume 14, Number 5—May 2008

Dispatch

Spread of Streptococcus suis Sequence Type 7, China

Changyun Ye*†1, Xuemei Bai†1, Ji Zhang†1, Huaiqi Jing†1, Han Zheng*1, Huamao Du†, Zhigang Cui†, Shouying Zhang†, Dong Jin*, Jianguo Xu*†Comments to Author , Yanwen Xiong*, Ailan Zhao*, Xia Luo*, Qiangzheng Sun*, Marcelo Gottschalk‡, and Yanmei Xu*Comments to Author 
Author affiliations: *State Key Laboratory for Infectious Disease Prevention and Control, Beijing, People’s Republic of China; †National Institute for Communicable Disease Control and Prevention, Changping, People’s Republic of China; ‡Université de Montréal, Montréal, Québec, Canada;

Main Article

Table 1

Source, serotype, sequence type, and tetracycline-resistant genes in Streptococcus suis strains*

No. strains
Source (no.)
Place of
isolation
Year of
isolation (no.)
Serotype (no.)
ST (no.)
tet gene (no. positive)
Tn916 (no.)
Virulence genes (no.)
cps2j
mrp
sly
ef
98 outbreak-associated ST7 strains in China
84 Human patients Sichuan, China 2005 2 ST7 tetM (84) Intact (84) + (84) + (84) + (84) + (84)
8 Diseased pigs Sichuan, China 2005 2 ST7 tetM (8) Intact (8) + (8) + (8) + (8) + (8)
4 Human patients Jiangsu, China 1998 4 ST7 tetM (4) Intact (4) + (4) + (4) + (4) + (4)
2
Diseased pigs
Jiangsu, China
1998
2
ST7
tetM (2)
Intact (2)
+ (2)
+ (2)
+ (2)
+ (2)
8 ST7 strains isolated from sporadic cases in China
5 Human patients 6 provinces, China 2005 (2)
2006 (3) 2 ST7 tetM (5) Intact (5) + (5) + (5) + (5) + (5)
3
Diseased pigs
Jiangxi, China
2005
2
ST7
tetM (3)
Intact (3)
+ 3)
+ (3)
+ (3)
+ (3)
7 ST1 and 1 untypeable strain isolated from sporadic cases in China
5 Human patients Guizhou,
Guangxi (4) 2005 2 (4)
14 ST1 tetM (4) Intact (4) + (4) + (5) + (5) + (5)
3
Human patients
3 provinces
2006
2
ST1 (2)
UT
tetO (2)
tetM
Intact (1)
+ (3)
+ (3)
+ (3)
+ (3)
12 serotype 2 strains from other countries
5 Human patients Netherlands (2), France (3) NA 2 ST1 tetO (3) + (5) + (5) + (5) + (4)
3 Diseased pigs Netherlands, France,
England NA 2 ST1 + (3) + (3) + (3) + (2)
4
Human patients (2), healthy pigs, diseased pigs
Canada (3), England
NA
2
ST25
tetO (4)

+ (4)



34 serotype reference strains
1 Human patients Netherlands NA 14 ST6 +
1 Diseased pig Denmark NA 13 ST71 tetM Intact +
25 Diseased pigs Canada (11), Denmark (5), Netherlands (9) NA 1/2, 2–12, 15–16, 22–30, 32, 34 ST1, ST35, ST53–55, ST68, ST69, ST72–73, ST75, ST77–78, ST80–82, ST87, ST91–92, UT (7) tetO (11) + (2) + (2) + (7) + (1)
2 Diseased calves Canada,
United States NA 20, 31 ST70 (1), UT (1) tetO (1)
1 Diseased lamb Canada NA 33 UT
4 Healthy pigs Canada NA 17–19, 21 ST76 (2), ST79, UT tetO (4) + (2)

*ST, sequence type; tet, tetracycline; UT, untypeable by multilocus sequence typing; NA, not available.

Main Article

1These authors contributed equally to this article.

Top of Page

USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO