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de Oliveira EV, Aragão DP, Gonçalves LMG. A New Auto-Regressive Multi-Variable Modified Auto-Encoder for Multivariate Time-Series Prediction: A Case Study with Application to COVID-19 Pandemics. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2024; 21:497. [PMID: 38673408 PMCID: PMC11049878 DOI: 10.3390/ijerph21040497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/28/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024]
Abstract
The SARS-CoV-2 global pandemic prompted governments, institutions, and researchers to investigate its impact, developing strategies based on general indicators to make the most precise predictions possible. Approaches based on epidemiological models were used but the outcomes demonstrated forecasting with uncertainty due to insufficient or missing data. Besides the lack of data, machine-learning models including random forest, support vector regression, LSTM, Auto-encoders, and traditional time-series models such as Prophet and ARIMA were employed in the task, achieving remarkable results with limited effectiveness. Some of these methodologies have precision constraints in dealing with multi-variable inputs, which are important for problems like pandemics that require short and long-term forecasting. Given the under-supply in this scenario, we propose a novel approach for time-series prediction based on stacking auto-encoder structures using three variations of the same model for the training step and weight adjustment to evaluate its forecasting performance. We conducted comparison experiments with previously published data on COVID-19 cases, deaths, temperature, humidity, and air quality index (AQI) in São Paulo City, Brazil. Additionally, we used the percentage of COVID-19 cases from the top ten affected countries worldwide until May 4th, 2020. The results show 80.7% and 10.3% decrease in RMSE to entire and test data over the distribution of 50 trial-trained models, respectively, compared to the first experiment comparison. Also, model type#3 achieved 4th better overall ranking performance, overcoming the NBEATS, Prophet, and Glounts time-series models in the second experiment comparison. This model shows promising forecast capacity and versatility across different input dataset lengths, making it a prominent forecasting model for time-series tasks.
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Affiliation(s)
| | | | - Luiz Marcos Garcia Gonçalves
- Department of Computer Engineering and Automation, Federal University of Rio Grande do Norte, Av. Salgado Filho, 3000, Campus Universitário, Lagoa Nova, Natal 59078-970, RN, Brazil; (E.V.d.O.); (D.P.A.)
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2
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Qiao J, Nishiura H. Public holidays increased the transmission of COVID-19 in Japan, 2020-2021: a mathematical modelling study. Epidemiol Health 2024; 46:e2024025. [PMID: 38317530 PMCID: PMC11099593 DOI: 10.4178/epih.e2024025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/06/2024] [Indexed: 02/07/2024] Open
Abstract
OBJECTIVES Although the role of specific holidays in modifying transmission dynamics of infectious diseases has received some research attention, the epidemiological impact of public holidays on the transmission of coronavirus disease 2019 (COVID-19) remains unclear. METHODS To assess the extent of increased transmission frequency during public holidays, we collected COVID-19 incidence and mobility data in Hokkaido, Tokyo, Aichi, and Osaka from February 15, 2020 to September 30, 2021. Models linking the estimated effective reproduction number (Rt) with raw or adjusted mobility, public holidays, and the state of emergency declaration were developed. The best-fit model included public holidays as an essential input variable, and was used to calculate counterfactuals of Rt in the absence of holidays. RESULTS During public holidays, on average, Rt increased by 5.71%, 3.19%, 4.84%, and 24.82% in Hokkaido, Tokyo, Aichi, and Osaka, respectively, resulting in a total increase of 580 (95% confidence interval [CI], 213 to 954), 2,209 (95% CI, 1,230 to 3,201), 1,086 (95% CI, 478 to 1,686), and 5,211 (95% CI, 4,554 to 5,867) cases that were attributable to the impact of public holidays. CONCLUSIONS Public holidays intensified the transmission of COVID-19, highlighting the importance of considering public holidays in designing appropriate public health and social measures in the future.
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Affiliation(s)
- Jiaying Qiao
- School of Public Health, Kyoto University, Kyoto, Japan
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3
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Geenen C, Thibaut J, Laenen L, Raymenants J, Cuypers L, Maes P, Dellicour S, André E. Unravelling the effect of New Year's Eve celebrations on SARS-CoV-2 transmission. Sci Rep 2023; 13:22195. [PMID: 38097713 PMCID: PMC10721646 DOI: 10.1038/s41598-023-49678-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 12/11/2023] [Indexed: 12/17/2023] Open
Abstract
Public holidays have been associated with SARS-CoV-2 incidence surges, although a firm link remains to be established. This association is sometimes attributed to events where transmissions occur at a disproportionately high rate, known as superspreading events. Here, we describe a sudden surge in new cases with the Omicron BA.1 strain amongst higher education students in Belgium. Contact tracers classed most of these cases as likely or possibly infected on New Year's Eve, indicating a direct trigger by New Year celebrations. Using a combination of contact tracing and phylogenetic data, we show the limited role of superspreading events in this surge. Finally, the numerous simultaneous transmissions allowed a unique opportunity to determine the distribution of incubation periods of the Omicron strain. Overall, our results indicate that, even under social restrictions, a surge in transmissibility of SARS-CoV-2 can occur when holiday celebrations result in small social gatherings attended simultaneously and communitywide.
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Affiliation(s)
- Caspar Geenen
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Jonathan Thibaut
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
| | - Lies Laenen
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
- Department of Laboratory Medicine, National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, Leuven, Belgium
| | - Joren Raymenants
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
| | - Lize Cuypers
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
- Department of Laboratory Medicine, National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, Leuven, Belgium
| | - Piet Maes
- Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical and Epidemiological Virology, KU Leuven, Leuven, Belgium
| | - Simon Dellicour
- Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical and Epidemiological Virology, KU Leuven, Leuven, Belgium
- Spatial Epidemiology Lab, Université Libre de Bruxelles, Brussels, Belgium
| | - Emmanuel André
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
- Department of Laboratory Medicine, National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, Leuven, Belgium
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4
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Silva JDP, Lima ABD, Alvim LB, Malta FSV, Mendonça CPTB, Carvalho AHBD, Rios JSH, Fonseca PLC, Queiroz DC, Santos LCGDAE, Ferreira ACDS, Souza RPD, Aguiar RSD, Zauli DAG. Epidemiological Surveillance Reveals the Rise and Establishment of the Omicron SARS-CoV-2 Variant in Brazil. Viruses 2023; 15:v15041017. [PMID: 37112997 PMCID: PMC10145299 DOI: 10.3390/v15041017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/14/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The introduction of SARS-CoV-2 variants of concern (VOCs) in Brazil has been associated with major impacts on the epidemiological and public health scenario. In this study, 291,571 samples were investigated for SARS-CoV-2 variants from August 2021 to March 2022 (the highest peak of positive cases) in four geographical regions of Brazil. To identify the frequency, introduction, and dispersion of SARS-CoV-2 variants in 12 Brazilian capitals, VOCs defining spike mutations were identified in 35,735 samples through genotyping and viral genome sequencing. Omicron VOC was detected in late November 2021 and replaced the Delta VOC in approximately 3.5 weeks. We estimated viral load differences between SARS-CoV-2 Delta and Omicron through the evaluation of the RT-qPCR cycle threshold (Ct) score in 77,262 samples. The analysis demonstrated that the Omicron VOC has a lower viral load in infected patients than the Delta VOC. Analyses of clinical outcomes in 17,586 patients across the country indicated that individuals infected with Omicron were less likely to need ventilatory support. The results of our study reinforce the importance of surveillance programs at the national level and showed the introduction and faster dispersion of Omicron over Delta VOC in Brazil without increasing the numbers of severe cases of COVID-19.
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Affiliation(s)
- Joice do Prado Silva
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 31270-901, Brazil
| | - Aline Brito de Lima
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 31270-901, Brazil
| | - Luige Biciati Alvim
- Departamento de Produtos e Inovação, Instituto Hermes Pardini, Belo Horizonte 31270-901, Brazil
| | | | | | | | | | - Paula Luize Camargos Fonseca
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Daniel Costa Queiroz
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Luíza Campos Guerra de Araújo E Santos
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | | | - Renan Pedra de Souza
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Renato Santana de Aguiar
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
- Instituto D'Or de Pesquisa e Ensino (IDOR), Rio de Janeiro 22281-100, Brazil
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Lyu H, Imtiaz A, Zhao Y, Luo J. Human behavior in the time of COVID-19: Learning from big data. Front Big Data 2023; 6:1099182. [PMID: 37091459 PMCID: PMC10118015 DOI: 10.3389/fdata.2023.1099182] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/21/2023] [Indexed: 04/09/2023] Open
Abstract
Since the World Health Organization (WHO) characterized COVID-19 as a pandemic in March 2020, there have been over 600 million confirmed cases of COVID-19 and more than six million deaths as of October 2022. The relationship between the COVID-19 pandemic and human behavior is complicated. On one hand, human behavior is found to shape the spread of the disease. On the other hand, the pandemic has impacted and even changed human behavior in almost every aspect. To provide a holistic understanding of the complex interplay between human behavior and the COVID-19 pandemic, researchers have been employing big data techniques such as natural language processing, computer vision, audio signal processing, frequent pattern mining, and machine learning. In this study, we present an overview of the existing studies on using big data techniques to study human behavior in the time of the COVID-19 pandemic. In particular, we categorize these studies into three groups-using big data to measure, model, and leverage human behavior, respectively. The related tasks, data, and methods are summarized accordingly. To provide more insights into how to fight the COVID-19 pandemic and future global catastrophes, we further discuss challenges and potential opportunities.
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Affiliation(s)
| | | | | | - Jiebo Luo
- Department of Computer Science, University of Rochester, Rochester, NY, United States
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6
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Aragão DP, Junior AGDS, Mondini A, Distante C, Gonçalves LMG. COVID-19 Patterns in Araraquara, Brazil: A Multimodal Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4740. [PMID: 36981646 PMCID: PMC10048455 DOI: 10.3390/ijerph20064740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/03/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
The epidemiology of COVID-19 presented major shifts during the pandemic period. Factors such as the most common symptoms and severity of infection, the circulation of different variants, the preparedness of health services, and control efforts based on pharmaceutical and non-pharmaceutical interventions played important roles in the disease incidence. The constant evolution and changes require the continuous mapping and assessing of epidemiological features based on time-series forecasting. Nonetheless, it is necessary to identify the events, patterns, and actions that were potential factors that affected daily COVID-19 cases. In this work, we analyzed several databases, including information on social mobility, epidemiological reports, and mass population testing, to identify patterns of reported cases and events that may indicate changes in COVID-19 behavior in the city of Araraquara, Brazil. In our analysis, we used a mathematical approach with the fast Fourier transform (FFT) to map possible events and machine learning model approaches such as Seasonal Auto-regressive Integrated Moving Average (ARIMA) and neural networks (NNs) for data interpretation and temporal prospecting. Our results showed a root-mean-square error (RMSE) of about 5 (more precisely, a 4.55 error over 71 cases for 20 March 2021 and a 5.57 error over 106 cases for 3 June 2021). These results demonstrated that FFT is a useful tool for supporting the development of the best prevention and control measures for COVID-19.
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Affiliation(s)
- Dunfrey Pires Aragão
- Pós-Graduação em Engenharia Elétrica e de Computação, Universidade Federal do Rio Grande do Norte, Av. Salgado Filho, 3000, Lagoa Nova, Natal 59078-970, Brazil
- Institute of Applied Sciences and Intelligent Systems-CNR, Via Monteroni sn, 73100 Lecce, Italy
| | | | - Adriano Mondini
- Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Rodovia Araraquara-Jaú, Km 1, Campus Ville, Araraquara 14800-903, Brazil
| | - Cosimo Distante
- Institute of Applied Sciences and Intelligent Systems-CNR, Via Monteroni sn, 73100 Lecce, Italy
| | - Luiz Marcos Garcia Gonçalves
- Pós-Graduação em Engenharia Elétrica e de Computação, Universidade Federal do Rio Grande do Norte, Av. Salgado Filho, 3000, Lagoa Nova, Natal 59078-970, Brazil
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7
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Kristiansen J, Sjúrðarson T, Grove EL, Rasmussen J, Kristensen SD, Hvas AM, Mohr M. Feasibility and impact of whole-body high-intensity interval training in patients with stable coronary artery disease: a randomised controlled trial. Sci Rep 2022; 12:17295. [PMID: 36241898 PMCID: PMC9568554 DOI: 10.1038/s41598-022-21655-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 09/29/2022] [Indexed: 01/10/2023] Open
Abstract
Exercise training reduces cardiovascular mortality and improves quality of life in CAD patients. We investigated the feasibility and impact of 12 weeks of low-volume high-intensity interval training (HIIT) in CAD-patients. Patients with stable CAD were randomized 1:1 to supervised HIIT or standard care. HIIT sessions were completed three times weekly for 12 weeks on a rowing ergometer. Before and after the 12-week intervention, patients completed a physiological evaluation of cardiorespiratory performance and quality of life questionnaires. Mixed model analysis was used to evaluate differences between and within groups. A total of 142 patients (67 ± 9 years, nHIIT = 64, nStandard care = 78) completed the trial. Training adherence was 97% (range 86-100%). Six patients dropped out because of non-fatal adverse events. Weekly training duration was 54 min with an average power output of 138 W. HIIT increased peak oxygen uptake by 2.5 mL/kg/min (95% CI 2.1-3.0), whereas no change was observed in standard care (0.2 mL/kg/min, 95% CI - 0.2-0.6, P < 0.001). In addition, HIIT improved markers of quality of life, including physical functioning, limitations due to physical illness, general health and vitality (P < 0.05). Twelve weeks of low-volume whole-body HIIT increased cardiorespiratory capacity and improved quality of life in patients with stable CAD compared to standard care. In addition, our study demonstrates that the applied vigorous training regime is feasible for this patient group.Clinical trial registration: www.clinicaltrials.gov . Identification number: NCT04268992.
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Affiliation(s)
- Jacobina Kristiansen
- Department of Medicine, National Hospital of the Faroe Islands, Tórshavn, Faroe Islands ,grid.154185.c0000 0004 0512 597XDepartment of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark ,grid.154185.c0000 0004 0512 597XDepartment of Cardiology, Aarhus University Hospital, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Faculty of Health, Aarhus University, Aarhus, Denmark ,grid.449708.60000 0004 0608 1526Faculty of Health, University of the Faroe Islands, Tórshavn, Faroe Islands
| | - Tórur Sjúrðarson
- grid.449708.60000 0004 0608 1526Faculty of Health, University of the Faroe Islands, Tórshavn, Faroe Islands ,grid.5254.60000 0001 0674 042XDepartment of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Erik Lerkevang Grove
- grid.154185.c0000 0004 0512 597XDepartment of Cardiology, Aarhus University Hospital, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Jan Rasmussen
- Department of Medicine, National Hospital of the Faroe Islands, Tórshavn, Faroe Islands
| | - Steen Dalby Kristensen
- grid.154185.c0000 0004 0512 597XDepartment of Cardiology, Aarhus University Hospital, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Anne-Mette Hvas
- grid.154185.c0000 0004 0512 597XDepartment of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Magni Mohr
- grid.449708.60000 0004 0608 1526Faculty of Health, University of the Faroe Islands, Tórshavn, Faroe Islands ,grid.10825.3e0000 0001 0728 0170Department of Sports Science and Clinical Biomechanics, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, 5230 Odense M, Denmark
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8
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Investigating the effects of absolute humidity and movement on COVID-19 seasonality in the United States. Sci Rep 2022; 12:16729. [PMID: 36202875 PMCID: PMC9537426 DOI: 10.1038/s41598-022-19898-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 09/06/2022] [Indexed: 11/10/2022] Open
Abstract
Mounting evidence suggests the primary mode of SARS-CoV-2 transmission is aerosolized transmission from close contact with infected individuals. While transmission is a direct result of human encounters, falling humidity may enhance aerosolized transmission risks similar to other respiratory viruses (e.g., influenza). Using Google COVID-19 Community Mobility Reports, we assessed the relative effects of absolute humidity and changes in individual movement patterns on daily cases while accounting for regional differences in climatological regimes. Our results indicate that increasing humidity was associated with declining cases in the spring and summer of 2020, while decreasing humidity and increase in residential mobility during winter months likely caused increases in COVID-19 cases. The effects of humidity were generally greater in regions with lower humidity levels. Given the possibility that COVID-19 will be endemic, understanding the behavioral and environmental drivers of COVID-19 seasonality in the United States will be paramount as policymakers, healthcare systems, and researchers forecast and plan accordingly.
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Nepomuceno TCC, Garcez TV, Silva LCE, Coutinho AP. Measuring the mobility impact on the COVID-19 pandemic. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2022; 19:7032-7054. [PMID: 35730295 DOI: 10.3934/mbe.2022332] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This assessment aims at measuring the impact of different location mobility on the COVID-19 pandemic. Data over time and over the 27 Brazilian federations in 5 regions provided by Google's COVID-19 community mobility reports and classified by place categories (retail and recreation, grocery and pharmacy, parks, transit stations, workplaces, and residences) are autoregressed on the COVID-19 incidence in Brazil using generalized linear regressions to measure the aggregate dynamic impact of mobility on each socioeconomic category. The work provides a novel multicriteria approach for selecting the most appropriate estimation model in the context of this application. Estimations for the time gap between contagion and data disclosure for public authorities' decision-making, estimations regarding the propagation rate, and the marginal mobility contribution for each place category are also provided. We report the pandemic evolution on the dimensions of cases and a geostatistical analysis evaluating the most critical cities in Brazil based on optimized hotspots with a brief discussion on the effects of population density and the carnival.
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Affiliation(s)
- Thyago Celso C Nepomuceno
- Núcleo de Tecnologia, Federal University of Pernambuco, Km 59, s/n, Nova Caruaru, Caruaru, PE, Brazil
- Dipartimento di Ingegneria Informatica Automatica e Gestionale Antonio Ruberti, Sapienza University of Rome, Via Ariosto, 25, Roma, Italy
| | - Thalles Vitelli Garcez
- Núcleo de Tecnologia, Federal University of Pernambuco, Km 59, s/n, Nova Caruaru, Caruaru, PE, Brazil
| | - Lúcio Camara E Silva
- Núcleo de Tecnologia, Federal University of Pernambuco, Km 59, s/n, Nova Caruaru, Caruaru, PE, Brazil
| | - Artur Paiva Coutinho
- Núcleo de Tecnologia, Federal University of Pernambuco, Km 59, s/n, Nova Caruaru, Caruaru, PE, Brazil
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