Table 1.

Demographic characteristics of the three participants infected with HIV-1

Sample ID	Age (years)	Gender	Marital status	City	Infectious route	Occupation	Educational level	Sample source	Initial CD4 count (cells/mm 3)
20747	18	Male	Unmarried	Shijiazhuang	MSM	Student	High school	VCT	665
20809	33	Male	Married	Langfang	MSM	Farmer	Primary school	VCT	479
20820	38	Male	Married	Langfang	MSM	Farmer	Primary school	VCT	467

MSM, men who have sex with men; VCT, voluntary counseling and testing