Table 2.
Infection fatality rate by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by nine regions in Mexico 2020 using deaths for national surveillance system and excess of deaths attributed to COVID-19
| Region | Population size |
Epidemiological week | Seroprevalence ENSANUT 2020Covid-19 |
Population with SARS-CoV-2 antibodies |
Deaths in surveillance systema |
COVID-19 deaths by death certificates b |
Ratio death certificates/ surveillance system | Infection fatality rate surveillance system |
Sex-age- adjusted infection fatality ratec surveillance system |
IFR COVID-19 deaths by death certificates |
Sex-age- adjusted IFRc deaths by death certificates |
|---|---|---|---|---|---|---|---|---|---|---|---|
| N | % (95% CI) | N | N | N | % (95% CI) | % (95% CI) | % (95% CI) | % (95% CI) | |||
| Pacific North | 11 702 669 | 46 | 31.0 (25.0, 36.6) | 3 627 373 | 12 708 | 17 505 | 1.4 | 0.35 (0.31, 0.40) | 0.33 (0.23, 0.49) | 0.48 (0.42, 0.56) | 0.44 (0.31, 0.68) |
| Border | 16 067 477 | 48 | 21.0 (15.6, 25.5) | 3 379 348 | 14 115 | 23 474 | 1.7 | 0.42 (0.36, 0.50) | 0.42 (0.29, 0.90) | 0.69 (0.59, 0.83) | 0.71 (0.49, 1.51) |
| Pacific Center | 13 711 124 | 46 | 19.4 (12.7, 25.2) | 2 663 860 | 7396 | 9920 | 1.3 | 0.28 (0.23, 0.34) | 0.28 (0.18, 0.71) | 0.37 (0.31, 0.45) | 0.38 (0.24, 0.96) |
| Center-North | 16 067 520 | 45 | 19.1 (14.6, 22.6) | 3 063 460 | 10 007 | 13 027 | 1.3 | 0.33 (0.28, 0.40) | 0.33 (0.24, 0.56) | 0.43 (0.36, 0.52) | 0.43 (0.31, 0.73) |
| Center | 12 386 608 | 46 | 25.5 (20.7, 29.6) | 3 162 000 | 9287 | 13 559 | 1.5 | 0.29 (0.25, 0.34) | 0.36 (0.23, 0.98) | 0.43 (0.37, 0.50) | 0.51 (0.33, 1.38) |
| Mexico City | 9 191 022 | 39 | 19.6 (14.7, 23.8) | 1 799 163 | 9606 | 17 742 | 1.8 | 0.53 (0.38, 0.64) | 0.53 (0.38, 0.64) | 0.99 (0.68, 1.19) | 0.99 (0.68, 1.19) |
| State of Mexico | 16 853 909 | 41 | 23.5 (18.3, 27.7) | 3 960 427 | 12 139 | 24 274 | 2.0 | 0.31 (0.26, 0.37) | 0.29 (0.20, 0.53) | 0.61 (0.52, 0.73) | 0.57 (0.41, 1.07) |
| Pacific South | 16 041 051 | 46 | 24.3 (17.2, 30.2) | 3 904 181 | 10 118 | 13 064 | 1.3 | 0.26 (0.22, 0.31) | 0.29 (0.20, 0.69) | 0.33 (0.29, 0.40) | 0.36 (0.25, 0.87) |
| Peninsula | 12 928 901 | 46 | 42.9 (36.3, 49.0) | 5 544 874 | 8841 | 13 410 | 1.5 | 0.16 (0.14, 0.18) | 0.18 (0.13, 0.27) | 0.24 (0.22, 0.27) | 0.26 (0.19, 0.41) |
a
Deaths due to COVID-19 (positive laboratory test result) registered in the national surveillance system named SISVER up to the epidemiological week of each region.
b
COVID-19-specific mortality from all death records for which basic cause of death was coded as U07.1 and U07.2 according to the International Classification of Disease 10th revision (updated in 2020) up to the epidemiological week of each region.
c
Mexico City was the reference population for sex and age standardization.