Analysis of COVID-19 Waves in The Province of Cordoba, Argentina, 2020–2022
In Cordoba, the COVID-19 pandemic showed different phases, called waves, in the occurrence of cases, which had different features. The purpose was to analyze the behavior of indicators of impact, mortality, lethality and vaccination coverage for COVID-19 in each wave of the SARS-CoV-2 infec...
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| Autores principales: | , , , , , , , |
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| Formato: | Artículo revista |
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Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología
2022
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/med/article/view/39135 |
| Aporte de: |
| Sumario: | In Cordoba, the COVID-19 pandemic showed different phases, called waves, in the occurrence of cases, which had different features. The purpose was to analyze the behavior of indicators of impact, mortality, lethality and vaccination coverage for COVID-19 in each wave of the SARS-CoV-2 infection in the province of Cordoba in the period from 2020 to 2022.
This is an environmental observational study based on data updated to epidemiological week 22 of 2022 (6/4/2022), gleaned from the National System of Health Surveillance of the Integrated System of Argentinian Health Care Information, which is supported by reports from health care services. The beginning and end of each wave was defined as the period comprised in the weeks with +/- 80% variation of the cases with respect to the epidemiological week with the peak of cases. Population projections provided by INDEC were used corresponding to each wave (2020: 3,760,450; 2021: 3,798,261 and 2022: 3,835,738).
The period of the first wave was from 8/23/2020 to 12/12/2020, the second from 3/21/2021 to 8/21/2021, and the third from 12/19/2021 to 1/29/2022. The confirmed cases and deaths in the first wave were 113,508 and 2,354, in the second 335,866 and 3,787, and in the third 401,563 and 736. Lethality was 2.07%, 1.13% and 0.18%, and the impact was 3018.47%000, 8842.63%000, and 10468.99%000. Mortality recorded values of 62.60%000, 99.70%000 and 19.19%000, respectively. During the first wave, no vaccines were as yet available for SARS-CoV-2; at the start of the second wave the coverage of the first dose reached 6.87%, and by the third wave, 89.5% of the population had received the first dose and 78.6% the second dose. In both confirmed cases and deaths, the average age was lower in the second wave and the percentage of cases in people over 65 years of age was higher in the first wave.
In short, the first wave recorded higher lethality and the third wave a higher impact but lower lethality and mortality, which may be due to both the progressive increase in vaccination coverage and the greater infectiousness and lower lethality of the new variants of SARS-CoV-2 in circulation. |
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