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. 2022 Apr 27;12:6874. doi: 10.1038/s41598-022-10896-4

Table 1.

IFR: infection fatality rate; VIN: percentage of virus inactivated vaccines; ADV: percentage of adenovirus vaccines; RNA: percentage of RNA vaccines2025; TD: decoupling time; % Nat-Inf: percentage of population naturally infected at TD; % Vac: percentage of the population fully vaccinated at TD; cHIT (conditional herd immunity threshold): percentage of immunized population due to vaccines and natural infections at TD. The vaccine effectiveness (VE) against SARS-CoV-2 infections was adjusted to 66% for VIN, 73% for ADV and 93% for RNA17,18.

Country IFR (VIN, ADV, RNA) TD % Nat-Inf % Vac cHIT (%)
Argentina 0.67 (0.36-1.30) (31.1, 64.7, 04.2) Jun. 02 26 (13-48) 06 29 (17-52)
Brazil 0.59 (0.32-1.17) (34.4, 48.1, 17.5) Jun. 23 40 (20-74) 11 45 (25-79)
Chile 0.73 (0.40-1.43) (71.1, 06.9, 22.0) May 22 20 (10-37) 40 43 (34-60)
Paraguay 0.41 (0.23-0.83) (11.6, 26.6, 61.8) Jun. 11 35 (18-64) 02 36 (19-64)
Uruguay 0.90 (0.49-1.56) (59.8, 01.6, 38.6) May 29 13 (8-24) 29 33 (27-44)
Israel 0.65 (0.35-1.27) (0,0,100) Feb. 28 10 (5-19) 39 42 (37-51)
Italy 1.38 (0.73-2.60) (0,14.3,85.7) Apr. 29 22 (11-32) 10 31 (17-38)