Table 1

Number of sentinel surveillance sites contributing data to China’s national HIV estimates, 2003 and 2005

Groups	2003 (national only)	2005
Groups	2003 (national only)	National	Provincial	Total
IDUs, injecting drug users; MSM, men who have sex with men; STD, sexually transmitted disease.
Female sex workers	43	67	57	124
Drug users/IDUs	49	77	92	169
STD outpatients	72	120	147	267
MSM	1	3	0	3
Pregnant women	18	37	45	82
Truck drivers	11	25	23	48
Others	−	−	56	56
Total	194	329	420	749