Résumé
Objective@#To investigate the prevalence of hepatitis C virus (HCV) infections among five high-risk populations in Inner Mongolia Autonomous Region, so as to provide insights into improvements in the control strategy for hepatitis C. @*Methods@#The detection of anti-HCV antibody was collected from patients receiving renal dialysis, patients receiving invasive diagnosis and treatment in hospitals, physical examination populations, unpaid blood donors and subjects admitted to family planning clinics in national hepatitis C surveillance sentinels in Inner Mongolia Autonomous Region from 2013 to 2021, and the year-, gender- and age-specific prevalence of anti-HCV antibody was analyzed. @*Results@#The mean prevalence of anti-HCV antibody was 2.19%, 1.81%, 0.05%, 0.10% and 0.03% among 3 600 patients receiving renal dialysis, 3 600 patients receiving invasive diagnosis and treatment in hospitals, 18 000 physical examination populations, 18 000 volunteer blood donors and 3 600 subjects admitted to family planning clinics, respectively. The prevalence of anti-HCV antibody appeared a tendency towards a decline among patients receiving renal dialysis (χ2trend=49.065, P<0.001) and volunteer blood donors (χ2trend=11.419, P=0.001). The prevalence of anti-HCV antibody was higher among male patients receiving invasive diagnosis and treatment in hospitals than among females (2.34% vs. 1.36%; χ2=4.826, P=0.028), and no gender-specific prevalence of anti-HCV antibody was seen among other four high-risk populations (all P>0.05). The highest prevalence of anti-HCV antibody was detected among patients receiving renal dialysis (3.30%) and patients receiving invasive diagnosis and treatment in hospitals at ages of 50 to 59 years (3.35%), while the highest prevalence was found among physical examination populations at ages of 60 years and greater (0.18%). @*Conclusion@#The prevalence of anti-HCV antibody was high among patients receiving renal dialysis and patients receiving invasive diagnosis and treatment in hospitals and low among physical examination populations, volunteer blood donors and subjects admitted to family planning clinics in Inner Mongolia Autonomous Region from 2013 to 2021. Periodical monitoring of anti-HCV antibody is recommended among the elderly.
Résumé
Objective The anti-HCV positive results obtained from ELISA assay was confirmed by using protein microarray, and then the difference of detection rate of different antibody function domains was studied through observing low risk population. Methods The HCV mixing antigen, core area antigen, NS3 domain antigen, NS4 domain antigen, NS5 domain antigen were spotted on the slide. The 48 serum samples, which was positive HCV detected by using ELISA assay, were chosen from the specimens applying to investigation of viral hepatitis seroepidemiology in 2001, and furthermore the antibodies containing different function domain were detected by using protein microarray. Results The negative results were obtained from different domains of 15 samples. Then 1-4 antibodies from 33 samples were positive. The total detection rate of anti-C, anti-NS3, anti-NS4, anti-NS5 was 51.5%, 51.5%, 48.5% and 57.6% respectively. In these above statistics, the detection rate of anti-C from Zhoushan, Quzhou, Wenzhou, Shaoxing was 53.3%, 33.3%, 44.4%, 66.7% respectively; the detection rate of anti-NS3 was 33.3%, 100%, 55.6%, 66.7% respetively; the detection rate of anti-NS4 was 60.0%, 0%, 33.3%, 66.7% respectively; 抗the detection rate of anti-NS5 was 66.7%, 0%, 44.4%, 83.3% respectively. Conclusion The difference of distribution of different antibody function domains existed through studying low risk population. Moreover, the protein microarray assay was highly specific for detecting and identifying HCV antibody in low risk population.