Table 1: Demographic data of the 265 isolates in Zigong, China.

FactorsWhole
()
Beijing
()
Non-Beijing
()
( value)

Sex
 Female3925141.6036 (0.2054)
 Male20911198
 Unknown17710
Age
 <30271986.9592 (0.0732)
301397960
60693039
75963
 Unknown21912
Treated before?
 Yes4425190.1732 (0.6773)
 No221118103

: evaluated the difference between Beijing and non-Beijing family strains.