Table 2 HCV GT/subtypes distribution in mainland China

East China

Shandong

1b 67.74% (95% CI: 60.94–74.53%)

6a,1a,3a,3b

2a 27.57% (95% CI: 22.76–32.38%)

Jiangsu

1b 75.77% (95% CI: 72.47–79.07%)

2i, 3b, 3a, 1a, 6a, 2b, 6 h, 1c, 6b

2a 11.01% (95% CI: 8.77–13.25%)

Anhui

1b 66.45% (95% CI: 47.57–85.32%)

3b, 3a, 6 k, 1a, 2b

2a 16.52% (95% CI: 8.77–24.28%)

Zhejiang

1b 67.95% (95% CI: 56.70–79.20%)

3b, 3a, 6a, 1a

2a 11.06% (95% CI: 9.06–13.05%)

Jiangxi

1b 70.28% (95% CI: 52.38–88.19%)

2a, 2b, 3a,3b

6a 21.82% (95% CI: 10.90–32.73%)

Fujian

1b 66.17% (95% CI: 33.93–98.4%)

3b, 6a, 3a, 2b,6b

2a 17.42% (95% CI: 11.45–23.39%)

Shanghai

1b 80.14% (95% CI: 69.64–90.63%)

3a,3b,1a,6n,6a

2a 13.28% (95% CI: 8.22–18.35%)

South China

Guangdong

1b 63.91% (95% CI: 58.48–69.34%

2a, 3b, 3a, 1a, 6e, 6n, 4, 2b, 5a,

6a 17.32% (95% CI: 14.44–20.21%)

1c, 2f

Guangxi

1b 56.46% (95% CI: 50.73–62.20%)

3b, 1a, 2a, 3a, 6d

6a 12.88% (95% CI: 9.00–16.75%)

Hainan

1b 62.50% (95% CI: 51.32–73.68%)

3a

2a 29.17% (95% CI: 18.67–39.67%)

North China

Beijing

1b 70.41% (95% CI: 65.95–74.87%)

1a,2b,3a

2a 22.15% (95% CI: 17.22–27.08%)

Hebei

1b 46.56% (95% CI: 40.69–52.44%)

1a,2b,3a

2a 36.69% (95% CI: 30.05–43.34%)

Shanxi

1b 67.22% (95% CI: 57.44–77.00%)

1a,3a

2a 13.51% (95% CI: 6.37–20.65%)

Tianjin

1b 84.21% (95% CI: 72.62%-95.8%)

2a 13.16% (95% CI: 2.41–23.91%)

Inner Mongolia

1b 63.27% (95% CI: 38.34–88.20%)

3a,1a

2a 33.33% (95% CI: 11.97–54.70%)

Central China

Hunan

1b 41.04% (95% CI: 33.71–48.37%)

3b,2a,3a,5a

6a 18.50% (95% CI: 12.71–24.28%)

Hubei

1b 74.08% (95% CI: 66.69–81.47%)

3b, 6a, 3a, 1a,2b,6b

2a 12.68% (95% CI: 8.91–16.46%)

Henan

1b 78.57% (95% CI: 62.47–94.66%)

6a,3a,3b,1a

2a 14.26% (95% CI: 5.71–22.8%)

Southwest

Sichuan

1b 78.84% (95% CI: 73.01–84.66%)

2a

3b 8.47% (95% CI: 4.50–12.43%)

Yunnan

3b 49.50% (95% CI: 38.01–60.98%)

3a, 2a, 6n, 6a

1b 20.52% (95% CI: 16.31–24.73%)

Tibet

1b 49.63% (95% CI: 41.27–58.0%)

1a

2a 16.38% (95% CI: −5.30–38.06%)

Guizhou

1b 35.22% (95% CI: 30.92–39.52%)

6a, 3a, 2a, 1a, 2b, 6d

3b 21.93% (95% CI: 18.22–25.65%)

Chongqing

1b 32.21% (95% CI: 25.04–39.38%)

2a, 6a, 3a, 1a, 6b, 2b,3 k

3b 21.86% (95% CI: 7.99–35.73%)

Northwest

Shaanxi

1b 50.74% (95% CI: 42.35–59.14%)

6a, 3a, 3b

2a 40.39% (95% CI: 32.15–48.62%)

Gansu

1b 56.07% (95% CI: 49.91–62.23%)

1c, 1a, 2c, 3a, 2b, 3b

2a 26.74% (95% CI: 16.44–37.03%)

Xinjiang

1b 62.71% (95% CI: 60.10–65.33%)

1a, 3a, 2b, 3b, 4, 6a

2a 18.10% (95% CI: 11.99–24.2%)

Qinghai

1b 49.08% (95% CI: 30.01–68.16%)

3b, 3a

2a 33.8% (95% CI: 26.84–40.76%)

Northeast

Heilongjiang

1b 48.46% (95% CI: 41.29–55.62%)

2c, 2b, 1a, 3a

2a 37.73% (95% CI: 28.82–46.65%)

Liaoning

1b 44.87% (95% CI: 24.30–65.44%)

1a, 2i, 3a, 1c, 2b, 3b, 3 k, 2 k

2a 34.37% (95% CI: 11.24–57.50%)

Jilin

1b 56.44% (95% CI: 50.51–62.38%)

2b, 1a,3a

2a 31.96% (95% CI: 19.42–44.50%)