Prevalence and Seroincidence of Hepatitis B and Hepatitis C Infection in High Risk People Who Inject Drugs in China and Thailand

Table 1

HBV and HCV prevalence and incidence rates for HBV and HCV at 3 sites in China and one site in Thailand; (95% confidence intervals).

	3 sites in China	Chiang Mai, Thailand
HBsAg prevalence at baseline	13.8% (11.7, 15.9)	13.9% (9.1, 18.7)
HCV Ab prevalence at baseline	81.9% (80.7, 83.1)	59.7% (56.2, 63.2)
HBsAg incidence	2.7/100 py (1.2, 5.1)	0/100 py (0.00, 10.1)
HCV Ab incidence	22/100 py (14.7, 31.6)	4.6/100 py (1.9, 9.0)