Table 1 Estimated number of anti-HAV positives among general population aged 20–79 in Japan.

From: Very low prevalence of anti-HAV in Japan: high potential for future outbreak

 

Population in 2015 Census

Prevalence of anti-HAV in study subjects [95%CI]

Estimated Number of anti-HAV positives in Japan [95%CI]

Male

20–29 y.o.

6, 224, 913

0.00%

[0.0–3.7%]

0

[0–230, 322]

30–39 y.o.

7, 843, 971

1.00%

[0.0–3.0%]

78, 439

[0–343, 647]

40–49 y.o.

9, 287, 757

0.00%

[0.0–3.7%]

0

[0–230, 322]

50–59 y.o.

7, 731, 854

2.00%

[0.0–4.7%]

154, 637

[0–363, 397]

60–69 y.o.

8, 880, 633

28.00%

[19.2–36.8%]

2, 486, 577

[1, 705, 082–3, 268, 073]

70–79 y.o.

6, 415, 400

70.00%

[61.0–79.0%]

4, 490, 780

[3, 913, 394–5, 068, 166]

Female

20–29 y.o.

5, 951, 429

0.00%

[0.0–3.7%]

0

[0–220, 203]

30–39 y.o.

7, 578, 404

2.00%

[0.0–4.7%]

151, 568

[0–356, 185]

40–49 y.o.

9, 017, 790

0.00%

[0.0–3.7%]

0

[0–333, 658]

50–59 y.o.

7, 696, 954

2.00%

[0.0–4.7%]

153, 939

[0–361, 757]

60–69 y.o.

9, 319, 173

26.00%

[17.4–34.6%]

2, 422, 985

[1, 621, 536–3, 224, 434]

70–79 y.o.

7, 665, 680

71.00%

[62.1–79.9%]

5, 442, 633

[4, 760, 387–6, 124, 878]

Total

93, 613, 958

16.40%

[12.8–21.4%]

15, 381, 558

[12, 000, 399–20, 030, 039]