The prevalence of screening for HBsAg and anti-HCV among inpatients with HIV infection
There were 1002 hospitalized HIV-infected cases in our hospital between January, 2010 and December, 2020. The proportion of patients screened for HBsAg was 81.8% (820/1002), which increased from 66.7% in 2010 to 85.7% in 2020 overall (P=0.045) (Figure 1). Among 820 individuals tested, 89 (10.9%) cases were HBsAg-positive. There were 37.1% (33/89) patients who were aware of their HBV-infected condition before hospitalization. The HBsAg prevalence was 12.5% (52/415) in the 30-50 year age group and 11.6% (20/172) in the < 30 years age group, while only 7.3% (17/233) in the > 50 years age (P > 0.05). For HBsAg-positive samples, there were 70.8% (63/89) cases with HBV DNA detection including 46 cases with beyond 10,000 IU/ml, 13 cases with HBV DNA between 100 IU/ml and 10,000 IU/ml, and 4 cases with HBV DNA under 100 IU/ml. Compared to 15.0% prevalence of HBsAg in the period of 2010-2015, there was a moderate decrease to 9.0% during 2016-2020 period (P=0.01). At discharge, there were 95.5% (85/89) HBsAg-positive cases who received tenofovir disoproxil fumarate (TDF) or tenofovir alafenamide (TAF) -containing ART (Figure2). The percentage of patients screened for anti-HCV were 73.9% (740/1002), which increased from 58.3% in 2010 to 86.6% in 2020 overall (P=0.001) (Figure1). There were 4.1% (30/740) cases with positive anti-HCV. The positive anti-HCV prevalence was 5.5% (11/201) in > 50 years age and 4.4% (16/362) in the 30-50 years age group, while only 1.9% (3/161) in < 30 years age (P > 0.05). Compared to 4.8% in the period of 2010-2015, there was a similar prevalence of 3.1% for anti-HCV during 2016-2020 (P > 0.05). There were 90.0% (27/30) anti-HCV positive cases with HCV RNA detection and 9 of these tested negative for HCV RNA. Among 18 cases with positive HCV-RNA (HIV/HCV coinfection), 4 cases were tested for genotypes. At discharge, there were 50% (9/18) HCVRNA-positive cases who received anti-HCV therapy (Figure2).
Distribution of HBV serological markers among cases with complete serological results
There were 487 cases with complete HBV serological makers and 47 cases (9.7%) were HBsAg-positive. Among the 47 HBsAg-positive cases, 48.9% (23/47) cases were HBeAg-positive. Isolated HBsAb positivity among inpatients with HIV infection was 26.5% (129/487). The highest isolated HBsAb prevalence was 40.6% (43/106) in the < 30-years age group. The lowest isolated HBsAb prevalence was 16.2% (24/148) in the > 50-years age group. Among the 440 HBsAg-negative cases, there were 43.9% (193/440) cases with positive HBcAb including 92 cases with isolated anti-HBc. The pattern of all negative for HBV serological testing among inpatients with HIV infection was 24.2% (118/487) (Table I).
Clinical characteristics at baseline among HIV/HBV coinfected patients
Among HBsAg-positive participants, 11.2% (10/89) cases had cirrhosis (4 cases at Child-Pugh class B and 6 cases at Child-Pugh class C). Compared with the patients with HIV monoinfection, the cases with HBV coinfection were more likely to have thrombocytopenia (p = 0.001), ALB <30 g/L (p = 0.036), ALT >50 U/L (p = 0.038), AST >40 U/L (p=0.001), ALP >100 U/L(p = 0.002) and PT >13.7 S (p = 0.003) (Table II). The multivariate logistic regression analysis showed that thrombocytopenia (P=0.001), ALB < 30g/L (P=0.024) and AST >40 U/L (P = 0.004) were the characteristics for HBsAg-positive cases (Table III).
Clinical characteristics at baseline among HIV/HCV coinfected patients
Among the 18 HIV/HCV coinfected patients, 2 cases had cirrhosis at Child-Pugh calss A. There were 55.6% (10/18) patients who were aware of their HCV-infected status before hospitalization. Compared with the patients with HIV monoinfection, the cases with HCV coinfection were more likely to present with ALT >50 U/L (p = 0.018), AST > 40U/L (p < 0.022), ALP > 100 U/L (p = 0.014) and age <30 (p = 0.047), while less likely to have CD4+T counts <200 /µL (p = 0.001) (TableII). The multivariate logistic regression analysis showed that AST >40 U/L (P = 0.013) and higher CD4+T counts (P = 0.001) were the characteristics for HCV RNA-positive cases (Table III).