Table 3 Background information of the 202 H. pylori clinical strains
City | Region | Ethnic group | Isolated year | No. of isolates |
|---|---|---|---|---|
Chongqing | Southern China | Han | 2004-2009 | 40 |
Guangzhou | Southern China | Han | 2004-2010 | 12 |
Inner Mongolia | Northern China | Mongolian | 2008 | 34 |
Shijiazhuang | Northern China | Han | 2002-2003 | 12 |
Beijing | Northern China | Han | 2004-2009 | 10 |
Hangzhou | Eastern China | Han | 1998-2004 | 26 |
Shanghai | Eastern China | Han | 2001-2007 | 10 |
Tibet | Western China | Tibetan | 2008-2009 | 43 |
Tokyo | Japan | Yamato | 2007 | 15 |