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Analyzing the COVID-19 Transmission Dynamics in Acre, Brazil: An Ecological Study
Joseane Elza Tonussi Mendes1,2, Blanca Elena Guerrero Daboin1,2, Tassiane Cristina Morais3,4
1Laboratory of Studies Design and Scientific Writing, Postgraduate Division, University Center FMABC, Santo André 09060-870, SP, Brazil.
Epidemiologia (Basel, Switzerland)
|May 28, 2024
Summary
COVID-19 trends in Brazil's vulnerable north showed initial rising incidence in 2020, followed by decreasing mortality and increasing lethality in 2021. Ongoing surveillance is crucial for remote healthcare resilience.
Area of Science:
- Epidemiology
- Public Health
- Infectious Disease Dynamics
Background:
- The north region of Brazil faces significant socioeconomic vulnerabilities and healthcare access challenges.
- These disparities amplified the impact of the COVID-19 pandemic, particularly on respiratory illnesses.
- Emerging SARS-CoV-2 variants with increased transmissibility complicated the pandemic's trajectory.
Purpose of the Study:
- To analyze the epidemiological evolution of COVID-19 in the state of Acre, Brazil.
- To examine trends in incidence, lethality, and mortality from March 2020 to December 2022.
- To inform public health strategies for vulnerable regions.
Main Methods:
- Ecological study design.
- Time-series analysis of COVID-19 data.
- Prais-Winsten regression model application.
Main Results:
- In 2020, COVID-19 incidence increased, while mortality and lethality decreased (p < 0.05).
- In 2021, incidence and mortality declined, but lethality rose by 1.02% daily.
- By late 2022, incidence, mortality, and lethality trends stabilized.
Conclusions:
- Sustained surveillance and adaptive public health measures are vital for healthcare resilience in remote areas.
- Continuous monitoring of SARS-CoV-2 lineages and their dynamics is imperative for effective pandemic response.
- Proactive strategies are essential to address emerging health challenges in vulnerable populations.
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