Molecular epidemiology of hepatitis C infections in Ningxia, China: genotype, phylogeny and mutation analysis

Table 1 HCV seroprevalence and RNA positive prevalence of the screened population by risk behaviors

Population by risk factors	Samples tested antibody	Samples antibody positive	Sero-prevalence	Samples tested RNA	HCV RNA+	Prevalence of HCV RNA+	Sequenced for NS5B region
Total	13,022	422	3.24 %	158	132	2.71 %	86
Drug users	2443	386	15.80 %	134	116	13.68 %	79
Injection drug user	601	284	47.25 %	82	73	42.07 %	51
Non-injection drug user	1842	102	5.54 %	52	43	4.58 %	28
Not Drug users	10,579	36	0.34 %	24	16	0.23 %	7
Blood donors	2099	3	0.14 %	0	0	-	0
Sex workers	2737	17	0.62 %	17	11	0.40 %	5
MSMs	400	0	0.00 %	0	0	-	0
Patients in STD clinics	2031	7	0.34 %	7	5	0.25 %	2
Long-distance truck drivers	100	2	2.00 %	0	0	-	0
Immigrants	400	1	0.25 %	0	0	-	0
Pregnant women	2012	2	0.10 %	0	0	-	0
College students	800	4	0.50 %	0	0	-	0

Nine groups from high- to low-risk populations were screened in Ningxia HIV/AIDS Sentinel Surveillance System, including 1) drug users (injection drug users and non-injection drug users), 2) blood donors, 3) female sex workers (FSW), 4) men who have sex with men (MSM), 5) sexual transmitted disease (STD) outpatients, 6) long-distance truck drivers, 7) migratory populations, 8) pregnant women, and 9) young students. The detailed criteria of the population were in Supplementary information 1. Prevalence of HCV antibody (seroprevalence) and HCV RNA was higher among injection drug users than that among non-injection drug users

ISSN: 1743-422X