Table 1.
COVID-19 deaths, confirmed cases, and case fatality rates (per 1,000) according to vaccination status, age, and sex – City of Londrina, Paraná – Brazil (2021)
| Variable | Unvaccinated |
Incomplete vaccination |
Full vaccination |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Deaths | Cases | CFR* | Deaths | Cases | CFR | Deaths | Cases | CFR | |
| Age group | |||||||||
| Under 60 | 498 | 42,431 | 11.74 | 55 | 6,541 | 8.41 | 6 | 2,024 | 2.96 |
| 60-69 | 275 | 3,439 | 79.97 | 39 | 451 | 86.47 | 40 | 939 | 19.76 |
| 70-79 | 272 | 1,624 | 167.49 | 21 | 120 | 175.00 | 114 | 1,011 | 56.32 |
| 80+ | 224 | 723 | 309.82 | 31 | 95 | 326.32 | 112 | 455 | 55.34 |
| Gender | |||||||||
| Male | 724 | 22,708 | 31.88 | 87 | 3,411 | 25.51 | 142 | 1,727 | 70.16 |
| Female | 545 | 25,509 | 21.37 | 59 | 3,796 | 15.54 | 130 | 2,702 | 64.23 |
| Overall | 1,269 | 48,217 | 26.32 | 146 | 7,207 | 20.26 | 272 | 4,429 | 61.41 |
| Age-standardized CFR | 43.51 | 47.33 | 28.7 | ||||||
| Decomposition - Summary | |||||||||
| Case fatality rate (per thousand) among fully vaccinated | 61.41 | ||||||||
| Case fatality rate (per thousand) among unvaccinated | 26.32 | ||||||||
| Difference in CFRs (fully vaccinated minus unvaccinated): | 35.09 | ||||||||
| Proportion of difference explained by age composition of cases (Alpha): | 72% | ||||||||
| Proportion of difference explained by age-specific case fatality (Delta): | 28% | ||||||||
⁎
The case fatality rate (CFR) is the ratio between confirmed deaths and confirmed cases.