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1.  Hepatitis C Virus Infection, Linxian, China1 
Emerging Infectious Diseases  2005;11(1):17-21.
The prevalence of HCV infection was high among older citizens of Linxian, China, in 2000.
Bloodborne viruses may have spread in rural China during the past 25 years, but population-based prevalence estimates are lacking. We examined the frequency of hepatitis C virus (HCV) and HIV type 1 (HIV-1) among residents of Linxian, a rural community in Henan Province. In 2000, blood was collected from participants (>55 years of age) who had enrolled in a population-based nutritional intervention trial in 1985. We randomly selected 500 participants for HCV testing and 200 participants for HIV-1 testing. For HCV, 48 (9.6%) of 500 participants were positive by enzyme immunoassay and recombinant immunoblot assay (95% confidence interval [CI], 7.0%–12.2%), and prevalence was lowest in the most geographically isolated participants. Among the HCV-infected participants, 42 had a specimen available from1985, of which 16 (38.1%) were positive for HCV. For HIV-1, 0/200 participants were positive. We conclude that HCV is now a common infection among older adults in Linxian, China.
doi:10.3201/eid1101.031005
PMCID: PMC3294338  PMID: 15705317
AIDS; China; epidemiology; hepatitis B virus (HBV); hepatitis C virus (HCV); human immunodeficiency virus type 1 (HIV-1); liver cancer; prevalence; research

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