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Introduction: the progression of SARS-CoV-2 highlighted the Americas region for the number of COVID-19 cases and deaths. In Brazil, the Southeast region was one of the most affected, especially the state of Rio de Janeiro, due to its cosmopolitan characteristics. Objective: to analyze temporal variations in the incidence, mortality and lethality of COVID-19 in the state of Rio de Janeiro from January 2020 to December 2022. Methods: ecological time-series study with publicly available data on COVID-19 cases and deaths. Crude incidence, mortality, and fatality rates, and estimates of percent daily change (DPC) were analyzed using Prais-Winsten linear regression. With calculation of crude rates were performed using Microsoft Excel 2019, and DPC estimates were performed using STATA MP 17.0 software. Results: 2.5 million cases and 76 thousand COVID-19 deaths were confirmed in the state of Rio de Janeiro from 2020 to 2022, with lethality declining from 4.89% to 0.60%. The highest lethality occurred in May 2020 (11.59%), October 2021 (9.13%) and March 2022 (6.78%), showing a stationary trend. In 2020, incidence and mortality rates peaked in December (797.76 per 100,000 inhabitants) and May (43.96 per 100,000 inhabitants), respectively, followed by subsequent declines. Incidence trend was increasing in 2020 and stationary in 2022, while mortality decreased in 2021 and 2022 after stability in 2020. Conclusion: The incidence of COVID-19 peaked in 2020 and subsequently declined, suggesting partial transmission control. Mortality stabilized after 2020, indicating evolution in health care. Lethality showed a stationary trend, indicating an improvement in hospital capacity. The divergent behavior of the epidemiological indicators reflected the complex dynamics of the pandemic in the analyzed state. There were 790 thousand deaths from COVID-19 in the State of Rio de Janeiro in the period from 2020 to 2022. [ABSTRACT FROM AUTHOR]

Introduction: coronavirus 2019 Disease (COVID-19) was quickly declared a pandemic, and Brazil is facing the most significant health and hospital crisis in its history. From March to June 2021 represented 50.8% of all deaths in the State of Espirito Santo. Objective: to analyze the lethality and mortality by COVID-19 in the State of Espirito Santo from March 2020 to June 2021. Methods: an ecological study was carried out, using a time series of public and official data available on the Health Department of the State of Espirito Santo, Brazil. Were considered information about cases and deaths (from March 2020 to June 2021) of COVID-19. Percentage case-fatality and mortality and incidence rates per 100,000 population were calculated. Time-series analyses were performed using the Prais-Winsten regression model, estimating the Daily Percent Change (DPC), and the trends were classified as flat, increasing, or decreasing. Significant differences were considered when p<0.05. Results: 524,496 confirmed cases of COVID-19 as of June 30, 2021, and 11,516 progressed to death. The presence of cardiovascular diseases represents more than half of confirmed comorbidities (54.37%) in patients with COVID-19, followed by diabetes (19.95%) and obesity (9.34%). Men had higher mortality and lethality, especially in older age groups, but the incidence was higher among women. A characteristic profile of two waves was observed; the first wave was extended from March to October 2020 and the second complete wave from November 2020 to June 2021. During the second wave, high peaks of incidence, lethality, and mortality were recorded. At the end of the second wave, the incidence rate remained with increasing trends (p < 0.05), with a DPC of 2.06%. Conclusion: the peak concentration of cases, deaths, and indicators of lethality, mortality evidenced even after one year of pandemic, characterizes the severity of the COVID-19 pandemic, still in entire evolution in the State Espirito Santo and Brazil. [ABSTRACT FROM AUTHOR]

Introduction: By late 2019, China notified a new disease rising, and with the agent's identification, it was called COVID-19. Despite the efforts of the World Health Organization (WHO) and worldwide countries, the disease spread out of control; on March 11, WHO declared the pandemic state. Brazil is the biggest country in South America, demarcated into 26 states with different economic, cultural, and social aspects. Paraná is one of the Brazilian federative units, it is the sixth more economically important and ranks second in Education. Its first COVID-19 case was confirmed on March 12, 2020, and the first death was on March 27, two weeks after the first death in Brazil. Objective: This study objective is to determine the mortality and case-fatality rates of COVID-19 in the State of Paraná, Brazil, from March 1, 2020, to March 31, 2021. Methods: It is an ecological time-series study, using all cases (854,326) and deaths (17,229 deaths) of COVID-19 reported in public and official database of the State of Paraná Health Department. Case fatality and mortality rates were stratified by sex and age. For trend analysis, the period was divided into a first "wave" (March to November 2020) and a second "wave" (December 2020 to March 2021). The Prais-Winsten regression model for population mortality and case-fatality rates allowed classifying whether it increased, decreased, or was flat. Results: Women were more affected by the number of cases, with 454,056 cases (53.15%) confirmed and 7,257 fatalities (42.12%). A total of 400,270 men (46.85%) were infected and 9,972(57.87%) died. For the first year of COVID-19, in the State of Paraná, the incidence was calculated as 7404.12/100,000 inhabitants, the mortality was 149.32/100,000 inhabitants, and the case-fatality rate was 2.02%. We saw a tendency for decreasing the case-fatality rate (DPC = -0,18; p<0,001). The mortality and incidence showed an increasing trend (DPC=1,13, p<0,001; DPC=1,58, p<0,001, respectively). Conclusion: The level and variability of transmission during this first year of pandemic suggest that the disease in the State of Paraná was never under control. [ABSTRACT FROM AUTHOR]

Introduction: the initial spread of the pandemic in Brazil was mainly affected by patterns of socioeconomic vulnerability. It should be noted that the Central-West region of Brazil is one of the regions with the lowest number of cases, but the states of this region together have the highest mortality rate of COVID-19 in the country. Goiás was the most affected state of this region, with the highest number of deaths in the area. Objective: to assess the incidence of mortality and lethality caused by COVID-19 from March 2020 to June 2021 in the State of Goiás, Brazil. Methods: an ecological study, using a series of time series of public and official data of the Department of Health of the State of Goiás, Brazil. Information was collected on cases and deaths from COVID-19 from March 2020 to June 2021. Mortality, case fatality, and incidence rates were calculated. The Prais-Wisten regression model was used to build time series. The daily percent change (DPC) and the effective reproductive number (Rt) were estimated. Results: Goiás had a predominance of a greater viral spread during the first and the beginning of the second wave, with Rt higher than 1. The second wave from December 2020 to June 2021 was more lethal and had higher mortality rates than the first wave. It was observed, higher scores of case fatality and mortality belonged to males and the elderly. Conclusion: an analysis of mortality and case fatality rates helps understand the COVID-19 pandemic behavior in Goiás. It is essential to monitor epidemiological indicators and strengthen intervention strategies to contain the pandemic in this state. [ABSTRACT FROM AUTHOR]

Introduction: the new coronavirus (COVID-19) disease has been causing economic and health system impacts worldwide, triggering humanitarian crises in vulnerable regions, marked by high mortality rates of the disease. Brazil has been suffering an increase in the number of cases, characteristic of the formation of a second wave, with great epidemiological differences observed in the most diverse regions of the country. Many studies illustrate the behaviour of COVID-19 in the state of São Paulo, but there are gaps in the scientific literature on the epidemiology of COVID-19 in municipalities of the São Paulo metropolitan region that constitute an important industrial pole in Latin America, such as the region of Grande ABC. Objective: to evaluate mortality and lethality trends of COVID-19 during the period March 2020 to July 2021, in municipalities on region of Grande ABC, metropolitan region of São Paulo, Brazil, divided into two periods (March to November 2020 and December to July 2021). Methods: we conducted an ecological time series study with population data from the Brazilian Ministry of Health. We collected the number of cases and deaths confirmed for COVID-19 in the municipalities that make up the region of Grande ABC (Diadema, Mauá, Rio Grande da Serra, Ribeirão Pires, Santo André, São Bernardo do Campo, and São Caetano do Sul) from March 2020 to July 2021. Prais-Winsten linear regression was performed, and the percentage of daily change was calculated. Differences were considered significant when p<0.05. Results: in region of Grande ABC, in the period analysed, 217,264 cases and 10,004 deaths of COVID-19 were recorded. Although the mortality rate remained stationary during the first wave (March to November 2020) and the second wave (December 2020 to July 2021); lethality transitioned from decreasing during the first wave to increasing during the second wave, with rates varying according to municipality. Conclusion: trend analyses in incidence, mortality, and lethality rates assist in understanding the behaviour of the COVID-19 Pandemic in the region known as Grande ABC. Efforts must be maintained throughout the region to control the Pandemic. [ABSTRACT FROM AUTHOR]

Introduction: COVID-19 impacted health systems worldwide; the virus quickly spread in Brazil, reaching its 27 Federative units peculiarly. The northern country region recorded the lowest number of cases and accumulated deaths from the disease. However, it is a region of sizeable territorial extension and low demographic density, marked by socioeconomic inequalities and vulnerable groups, such as indigenous tribes, riverine peoples, and quilombolas. Sociodemographic factors may contribute to the dissemination of the coronavirus in this territory; thus, studies are needed to analyze the epidemiological indicators related to the pandemic. Objective: to evaluate incidence, mortality, and case fatality of COVID-19 trends in the state of Amapá, Brazil, from March 2020 to April 2021. Methods: an ecological time-series study was conducted with publicly accessible data from the Health Department of the State of Amapá. Incidence and mortality rates per 100,000 inhabitants and percentage case fatality were calculated. Crude rates were calculated by municipalities, age, and sex, per month. The Prais-Winsten regression test was performed, and the trends of monthly rates were classified as increasing, decreasing, or flat. Results: during the study period, there were 99.936 cases and 1,468 deaths accumulated by COVID-19 in the State of Amapá, Brazil. Macapá and Santana's cities, which have the highest demographic density and Human Development Index (HDI), had the highest number of cases and deaths. The most vulnerable population was elderly males aged 70 years or over; these individuals had the highest cumulative incidence, case fatality, and mortality rates. The second wave of the disease (October 2020 to April 2021) illustrated a more aggravating scenario, with increasing incidence and mortality rates. Conclusion: the COVID-19 pandemic in the state of Amapá, Brazil, is in increasing evolution, which illustrates that non-pharmacological prevention measures and acceleration of vaccination must be strengthened to avoid the development of future waves of the disease. [ABSTRACT FROM AUTHOR]

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