[An epidemiological study on the rate of becoming chronic in HCV infection].
Anti-HCV (+) and/or HCV RNA (+) were chosen for study on patients admitted to two provincial hospitals and "professional" blood donors in one of the areas in Anhui province in 1992-1996. Clinical diagnosis, treatment and epidemiology on HCV infection were retrospectively reviewed and in the meantime their present condition together with experimental data were studied; Chronic tendency on HCV infection of blood donors was described. Results showed that the rates of duration on becoming chronic for HCV infection were: six month later-55.93%, one year-50%, two-years-48.54%, three years-46.47% and four years-46.43%. Rate of becoming chronic after HCV infection was continuously in high level, then slowly decreasing, to 46%-48% in two years, still much higher than hepatitis B which had a rate of 5%-10% becoming chronic.
D000328:Adult; D001782:Blood Donors; D002681:China / Q000453:epidemiology; D005260:Female; D016174:Hepacivirus / Q000302:isolation & purification; D018937:Hepatitis C Antibodies / Q000097:blood*; D019698:Hepatitis C, Chronic / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012367:RNA, Viral / Q000097:blood; D012189:Retrospective Studies