En av dessa rangordningar
https://www.numbeo.com/health-care/rankings_by_country.jsp
Health Care Index by Country 2020
1 Taiwan 86.71 159.66
2 South Korea 81.97 149.94
3 Japan 81.14 148.24
4 Denmark 80.00 147.47
5 France 79.99 146.81
6 Spain 78.88 145.24
7 Austria 78.73 144.24
8 Thailand 77.95 142.04
9 Australia 77.38 140.97
10 Finland 75.79 138.01
32 Sweden 69.23 126.86
40 Italy 66.59 120.66
47 China 64.48 115.53
https://www.worldometers.info/coronavirus/
https://www.indexmundi.com/sweden/age_structure.html
Sweden Age structure
Age structure:
0-14 years: 17.54% (male 904,957 /female 855,946)
15-24 years: 11.06% (male 573,595 /female 537,358)
25-54 years: 39.37% (male 2,005,422 /female 1,947,245)
55-64 years: 11.67% (male 588,314 /female 583,002)
65 years and over: 20.37% (male 946,170 /female 1,098,986) (2018 est.)
https://www.indexmundi.com/italy/age_structure.html
Italy Age structure
Age structure:
0-14 years: 13.6% (male 4,326,862 /female 4,136,562)
15-24 years: 9.61% (male 2,994,651 /female 2,984,172)
25-54 years: 41.82% (male 12,845,442 /female 13,183,240)
55-64 years: 13.29% (male 4,012,640 /female 4,261,956)
65 years and over: 21.69% (male 5,817,819 /female 7,683,330) (2018 est.)
https://www.indexmundi.com/china/age_structure.html
China Age structure
0-14 years: 17.22% (male 128,270,371 /female 110,120,535)
15-24 years: 12.32% (male 91,443,139 /female 79,181,726)
25-54 years: 47.84% (male 338,189,015 /female 324,180,103)
55-64 years: 11.35% (male 79,340,391 /female 77,857,806)
65 years and over: 11.27% (male 74,277,631 /female 81,828,269) (2018 est.)
https://www.indexmundi.com/south_korea/age_structure.html
South Korea Age structure
Age structure:
0-14 years: 13.03% (male 3,448,627 /female 3,251,786)
15-24 years: 12.19% (male 3,295,814 /female 2,970,439)
25-54 years: 45.13% (male 11,986,760 /female 11,220,268)
55-64 years: 15.09% (male 3,825,127 /female 3,935,700)
65 years and over: 14.55% (male 3,202,232 /female 4,281,344) (2018 est.)
https://www.indexmundi.com/united_states/age_structure.html
United States Age structure
Age structure:
0-14 years: 18.62% (male 31,329,121 /female 29,984,705)
15-24 years: 13.12% (male 22,119,340 /female 21,082,599)
25-54 years: 39.29% (male 64,858,646 /female 64,496,889)
55-64 years: 12.94% (male 20,578,432 /female 22,040,267)
65 years and over: 16.03% (male 23,489,515 /female 29,276,951) (2018 est.)
https://www.indexmundi.com/tanzania/age_structure.html
Tanzania Age structure
Age structure:
0-14 years: 43.4% (male 12,159,482 /female 11,908,654)
15-24 years: 20.03% (male 5,561,922 /female 5,543,788)
25-54 years: 30.02% (male 8,361,460 /female 8,284,229)
55-64 years: 3.51% (male 872,601 /female 1,074,480)
65 years and over: 3.04% (male 706,633 /female 978,094) (2018 est.)