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Roelofs B, Vos D, Halabi Y, Gerstenbluth I, Duits A, Grillet ME, Tami A, Vincenti-Gonzalez MF. Spatial and temporal trends of dengue infections in Curaçao: A 21-year analysis. Parasite Epidemiol Control 2024; 24:e00338. [PMID: 38323192 PMCID: PMC10844965 DOI: 10.1016/j.parepi.2024.e00338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/22/2023] [Accepted: 01/23/2024] [Indexed: 02/08/2024] Open
Abstract
Dengue viruses are a significant global health concern, causing millions of infections annually and putting approximately half of the world's population at risk, as reported by the World Health Organization (WHO). Understanding the spatial and temporal patterns of dengue virus spread is crucial for effective prevention of future outbreaks. By investigating these patterns, targeted dengue surveillance and control measures can be improved, aiding in the management of outbreaks in dengue-affected regions. Curaçao, where dengue is endemic, has experienced frequent outbreaks over the past 25 years. To examine the spatial and temporal trends of dengue outbreaks in Curaçao, this study employs an interdisciplinary and multi-method approach. Data on >6500 cases of dengue infections in Curaçao between the years 1995 and 2016 were used. Temporal and spatial statistics were applied. The Moran's I index identified the presence of spatial autocorrelation for incident locations, allowing us to reject the null hypothesis of spatial randomness. The majority of cases were recorded in highly populated areas and a relationship was observed between population density and dengue cases. Temporal analysis demonstrated that cases mostly occurred from October to January, during the rainy season. Lower average temperatures, higher precipitation and a lower sea surface temperature appear to be related to an increase in dengue cases. This effect has a direct link to La Niña episodes, which is the cooling phase of El Niño Southern Oscillation. The spatial and temporal analyses conducted in this study are fundamental to understanding the timing and locations of outbreaks, and ultimately improving dengue outbreak management.
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Affiliation(s)
- Bart Roelofs
- University of Groningen, Faculty of Spatial Sciences, Groningen, the Netherlands
| | - Daniella Vos
- University of Groningen, Faculty of Spatial Sciences, Groningen, the Netherlands
| | | | | | - Ashley Duits
- Red Cross Blood Bank Foundation Curaçao, Curaçao
| | - Maria E. Grillet
- Laboratorio de Biología de Vectores y Parásitos, Instituto de Zoología y Ecología Tropical, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, Venezuela
| | - Adriana Tami
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, the Netherlands
| | - Maria F. Vincenti-Gonzalez
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, the Netherlands
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2
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Medina-Carrasco D, Pupo D, González-Lodeiro LG, García LE, Martin AM, Huerta V. Activity of domain III-specific antibodies in early convalescence: A case study. Virology 2023; 587:109883. [PMID: 37757730 DOI: 10.1016/j.virol.2023.109883] [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: 06/07/2023] [Revised: 08/15/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
The Dengue virus complex (DENV), formed by four serotypes, constitutes the most important arbovirus affecting humans. The structural domain III of their envelope protein (DIII) elicits strongly neutralizing serotype-specific antibodies. Contrasting results have been obtained regarding their role in the serum neutralizing activity of infected patients. We used a DENV immune serum from a secondary infection to examine the impact of characterizing the anti-DIII antibody response after affinity purification with recombinant DIII proteins to eliminate potential interferences from the interactions with human plasma proteins and other anti-DENV antibodies. Total anti-DENV IgG repertoire and anti-DIIIE antibodies were compared in functionality. In early convalescence, reactivity of anti-DIII antibodies is serotype specific and exhibits the strongest reactivity with infecting serotypes. Purification of anti-DIII antibodies emphasizes the reactivity profile as compared to total IgG fraction and serum. Serotype-specificity of the virus neutralization activity correlated with the apparent kD of the binding to recombinant DIIIs.
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Affiliation(s)
- Danya Medina-Carrasco
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Dianne Pupo
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Luis G González-Lodeiro
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Lisandra E García
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Alejandro M Martin
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Vivian Huerta
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba.
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3
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Cazelles B, Cazelles K, Tian H, Chavez M, Pascual M. Disentangling local and global climate drivers in the population dynamics of mosquito-borne infections. SCIENCE ADVANCES 2023; 9:eadf7202. [PMID: 37756402 PMCID: PMC10530079 DOI: 10.1126/sciadv.adf7202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 08/21/2023] [Indexed: 09/29/2023]
Abstract
Identifying climate drivers is essential to understand and predict epidemics of mosquito-borne infections whose population dynamics typically exhibit seasonality and multiannual cycles. Which climate covariates to consider varies across studies, from local factors such as temperature to remote drivers such as the El Niño-Southern Oscillation. With partial wavelet coherence, we present a systematic investigation of nonstationary associations between mosquito-borne disease incidence and a given climate factor while controlling for another. Analysis of almost 200 time series of dengue and malaria around the globe at different geographical scales shows a systematic effect of global climate drivers on interannual variability and of local ones on seasonality. This clear separation of time scales of action enhances detection of climate drivers and indicates those best suited for building early-warning systems.
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Affiliation(s)
- Bernard Cazelles
- UMMISCO, Sorbonne Université, Paris, France
- Eco-Evolution Mathématique, IBENS, CNRS UMR-8197, Ecole Normale Supérieure, Paris, France
| | - Kévin Cazelles
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada
- inSileco Inc., 2-775 Avenue Monk, Québec, Québec, Canada
| | - Huaiyu Tian
- State Key Laboratory of Remote Sensing Science, Center for Global Change and Public Health, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
| | - Mario Chavez
- Hôpital de la Pitié-Salpêtrière, CNRS UMR-7225, Paris, France
| | - Mercedes Pascual
- Department of Ecology and Evolution, University of Chicago, Chicago, IL, USA
- The Santa Fe Institute, Santa Fe, NM, USA
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Barrera R, Acevedo V, Amador M, Marzan M, Adams LE, Paz-Bailey G. El Niño Southern Oscillation (ENSO) effects on local weather, arboviral diseases, and dynamics of managed and unmanaged populations of Aedes aegypti (Diptera: Culicidae) in Puerto Rico. JOURNAL OF MEDICAL ENTOMOLOGY 2023; 60:796-807. [PMID: 37156093 PMCID: PMC10982904 DOI: 10.1093/jme/tjad053] [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: 01/03/2023] [Revised: 04/03/2023] [Accepted: 04/20/2023] [Indexed: 05/10/2023]
Abstract
We investigated the effects of interannual El Niño Southern Oscillation (ENSO) events on local weather, Aedes aegypti populations, and combined cases of dengue (DENV), chikungunya (CHIKV), and Zika (ZIKV) viruses in 2 communities with mass mosquito trapping and 2 communities without mosquito control in southern Puerto Rico (2013-2019). Gravid adult Ae. aegypti populations were monitored weekly using Autocidal Gravid Ovitraps (AGO traps). Managing Ae. aegypti populations was done using 3 AGO traps per home in most homes. There were drought conditions in 2014-2015 concurrent with the emergence of a strong El Niño (2014-2016), wetter conditions during La Niña (2016-2018), a major hurricane (2017), and a weaker El Niño (2018-2019). The main factor explaining differences in Ae. aegypti abundance across sites was mass trapping. Populations of Ae. aegypti reached maximum seasonal values during the wetter and warmer months of the year when arbovirus epidemics occurred. El Niño was significantly associated with severe droughts that did not impact the populations of Ae. aegypti. Arbovirus cases at the municipality level were positively correlated with lagged values (5-12 mo.) of the Oceanic El Niño Index (ONI), droughts, and abundance of Ae. aegypti. The onset of strong El Niño conditions in Puerto Rico may be useful as an early warning signal for arboviral epidemics in areas where the abundance of Ae. aegypti exceeds the mosquito density threshold value.
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Affiliation(s)
- Roberto Barrera
- Dengue Branch, DVBID, Centers for Disease Control and Prevention, 1324 Calle Cañada, San Juan, Puerto Rico 00920
| | - Veronica Acevedo
- Dengue Branch, DVBID, Centers for Disease Control and Prevention, 1324 Calle Cañada, San Juan, Puerto Rico 00920
| | - Manuel Amador
- Dengue Branch, DVBID, Centers for Disease Control and Prevention, 1324 Calle Cañada, San Juan, Puerto Rico 00920
| | - Melissa Marzan
- Department of Health of Puerto Rico, 1111 Av. Tte. César Luis González, San Juan, Puerto Rico 00927
| | - Laura E. Adams
- Dengue Branch, DVBID, Centers for Disease Control and Prevention, 1324 Calle Cañada, San Juan, Puerto Rico 00920
| | - Gabriela Paz-Bailey
- Dengue Branch, DVBID, Centers for Disease Control and Prevention, 1324 Calle Cañada, San Juan, Puerto Rico 00920
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Robert MA, Rodrigues HS, Herrera D, de Mata Donado Campos J, Morilla F, Del Águila Mejía J, Guardado ME, Skewes R, Colomé-Hidalgo M. Spatiotemporal and meteorological relationships in dengue transmission in the Dominican Republic, 2015-2019. Trop Med Health 2023; 51:32. [PMID: 37269000 DOI: 10.1186/s41182-023-00517-9] [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: 09/23/2022] [Accepted: 04/30/2023] [Indexed: 06/04/2023] Open
Abstract
Dengue has broadened its global distribution substantially in the past two decades, and many endemic areas are experiencing increases in incidence. The Dominican Republic recently experienced its two largest outbreaks to date with 16,836 reported cases in 2015 and 20,123 reported cases in 2019. With continued increases in dengue transmission, developing tools to better prepare healthcare systems and mosquito control agencies is of critical importance. Before such tools can be developed, however, we must first better understand potential drivers of dengue transmission. To that end, we focus in this paper on determining relationships between climate variables and dengue transmission with an emphasis on eight provinces and the capital city of the Dominican Republic in the period 2015-2019. We present summary statistics for dengue cases, temperature, precipitation, and relative humidity in this period, and we conduct an analysis of correlated lags between climate variables and dengue cases as well as correlated lags among dengue cases in each of the nine locations. We find that the southwestern province of Barahona had the largest dengue incidence in both 2015 and 2019. Among all climate variables considered, lags between relative humidity variables and dengue cases were the most frequently correlated. We found that most locations had significant correlations with cases in other locations at lags of zero weeks. These results can be used to improve predictive models of dengue transmission in the country.
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Affiliation(s)
- Michael A Robert
- Department of Mathematics and Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens (CeZAP), Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
| | - Helena Sofia Rodrigues
- Escola Superior de Ciências Empresariais, Instituto Politécnico de Viana do Castelo, Valença, Portugal
- Centro de Investigação e Desenvolvimento em Matemática e Aplicações, Universidade de Aveiro, Aveiro, Portugal
| | - Demian Herrera
- Centro de Investigación en Salud Dr. Hugo Mendoza, Hospital Pediátrico Dr. Hugo Mendoza, Santo Domingo, Dominican Republic
| | - Juan de Mata Donado Campos
- Departamento de Medicina Preventiva y Salud Pública y Microbiología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Universidad Autónoma de Madrid, Madrid, Spain
- Consorcio de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, Calle Monforte de Lemos 3-5, 28029, Madrid, Spain
| | - Fernando Morilla
- Departamento de Informática y Automática, Escuela Técnica Superior de Ingeniería Informática, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - Javier Del Águila Mejía
- Departamento de Medicina Preventiva y Salud Pública y Microbiología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - María Elena Guardado
- Instituto Tecnológico de Santo Domingo (INTEC), Santo Domingo, Dominican Republic
| | - Ronald Skewes
- Dirección General de Epidemiología, Ministerio de Salud, Santo Domingo, Dominican Republic
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Andhikaputra G, Lin YH, Wang YC. Effects of temperature, rainfall, and El Niño Southern Oscillations on dengue-like-illness incidence in Solomon Islands. BMC Infect Dis 2023; 23:206. [PMID: 37024812 PMCID: PMC10080901 DOI: 10.1186/s12879-023-08188-x] [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: 11/30/2022] [Accepted: 03/21/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND This study investigated associations between climate variables (average temperature and cumulative rainfall), and El Niño Southern Oscillation (ENSO) and dengue-like-illness (DLI) incidence in two provinces (Western and Guadalcanal Provinces) in Solomon Islands (SI). METHODS Weekly DLI and meteorological data were obtained from the Ministry of Health and Medical Services SI and the Ministry of Environment, Climate Change, Disaster Management and Meteorology from 2015 to 2018, respectively. We used negative binomial generalized estimating equations to assess the effects of climate variables up to a lag of 2 months and ENSO on DLI incidence in SI. RESULTS We captured an upsurge in DLI trend between August 2016 and April 2017. We found the effects of average temperature on DLI in Guadalcanal Province at lag of one month (IRR: 2.186, 95% CI: 1.094-4.368). Rainfall had minor but consistent effect in all provinces. La Niña associated with increased DLI risks in Guadalcanal Province (IRR: 4.537, 95% CI: 2.042-10.083), whereas El Niño associated with risk reduction ranging from 72.8% to 76.7% in both provinces. CONCLUSIONS Owing to the effects of climate variability and ENSO on DLI, defining suitable and sustainable measures to control dengue transmission and enhancing community resilience against climate change in low- and middle-developed countries are important.
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Affiliation(s)
- Gerry Andhikaputra
- Department of Environmental Engineering, College of Engineering, Chung Yuan Christian University, 200 Chung-Pei Road, Zhongli, 320, Taiwan
| | - Yu-Han Lin
- Department of Environmental Engineering, College of Engineering, Chung Yuan Christian University, 200 Chung-Pei Road, Zhongli, 320, Taiwan
| | - Yu-Chun Wang
- Department of Environmental Engineering, College of Engineering, Chung Yuan Christian University, 200 Chung-Pei Road, Zhongli, 320, Taiwan.
- Research Center for Environmental Changes, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, 11529, Taiwan.
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Identification of Hazard and Socio-Demographic Patterns of Dengue Infections in a Colombian Subtropical Region from 2015 to 2020: Cox Regression Models and Statistical Analysis. Trop Med Infect Dis 2022; 8:tropicalmed8010030. [PMID: 36668937 PMCID: PMC9860805 DOI: 10.3390/tropicalmed8010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/10/2022] [Accepted: 12/21/2022] [Indexed: 01/03/2023] Open
Abstract
Dengue is a disease of high interest for public health in the affected localities. Dengue virus is transmitted by Aedes species and presents hyperendemic behaviors in tropical and subtropical regions. Colombia is one of the countries most affected by the dengue virus in the Americas. Its central-west region is a hot spot in dengue transmission, especially the Department of Antioquia, which has suffered from multiple dengue outbreaks in recent years (2015-2016 and 2019-2020). In this article, we perform a retrospective analysis of the confirmed dengue cases in Antioquia, discriminating by both subregions and dengue severity from 2015 to 2020. First, we conduct an exploratory analysis of the epidemic data, and then a statistical survival analysis is carried out using a Cox regression model. Our findings allow the identification of the hazard and socio-demographic patterns of dengue infections in the Colombian subtropical region of Antioquia from 2015 to 2020.
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Yáñez-Serrano AM, Aguilos M, Barbosa C, Bolaño-Ortiz TR, Carbone S, Díaz-López S, Diez S, Dominutti P, Engelhardt V, Alves EG, Pedraza J, Saturno J, Tzompa-Sosa ZA. The Latin America Early Career Earth System Scientist Network (LAECESS): addressing present and future challenges of the upcoming generations of scientists in the region. NPJ CLIMATE AND ATMOSPHERIC SCIENCE 2022; 5:79. [PMID: 36281291 PMCID: PMC9581757 DOI: 10.1038/s41612-022-00300-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Early career (EC) Earth system scientists in the Latin America and the Caribbean region (LAC) have been facing several issues, such as limited funding opportunities, substandard scientific facilities, lack of security of tenure, and unrepresented groups equality issues. On top of this, the worsening regional environmental and climatic crises call for the need for this new generation of scientists to help to tackle these crises by increasing public awareness and research. Realizing the need to converge and step up in making a collective action to be a part of the solution, the Latin America Early Career Earth System Scientist Network (LAECESS) was created in 2016. LAECESS's primary goals are to promote regional networking, foster integrated and interdisciplinary science, organize soft skills courses and workshops, and empower Latin American EC researchers. This article is an initial step towards letting the global science community grasp the current situation and hear the early career LAC science community's perspectives. The paper also presents a series of future steps needed for better scientific and social development in the LAC region.
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Affiliation(s)
- Ana María Yáñez-Serrano
- IDAEA-CSIC, Barcelona, Spain
- CREAF, Bellaterra (Cerdanyola del Vallès), Catalonia, Spain
- Global Ecology Unit, CREAF‐CSIC‐UAB, Catalonia, Spain
| | - Maricar Aguilos
- Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC USA
| | | | - Tomás Rafael Bolaño-Ortiz
- Centre for Environmental Technologies, Universidad Técnica Federico Santa María (CETAM-USM), Valparaíso, Chile
| | - Samara Carbone
- Federal University of Uberlandia, Agrarian Sciences Institute, Santa Mônica, Uberlândia - MG Brasil
| | - Stephanie Díaz-López
- Centro de Ciencias Atmosféricas y Biogeoquímica, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - Sebastián Diez
- Wolfson Atmospheric Chemistry Laboratories, University of York, Innovation Way, Heslington, York UK
- Universidad Tecnológica Nacional, Còrdoba, Argentina
| | | | - Vanessa Engelhardt
- Centro de Ciencias Atmosféricas y Biogeoquímica, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
- Leibniz Institute for Tropospheric Research, Leipzig, Germany
| | - Eliane Gomes Alves
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, Germany
- Department of Climate and Environment, National Institute of Amazonian Research, Manaus, Brazil
| | | | - Jorge Saturno
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
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Marinho RDSS, Duro RLS, Mota MTDO, Hunter J, Diaz RS, Kawakubo FS, Komninakis SV. Environmental Changes and the Impact on the Human Infections by Dengue, Chikungunya and Zika Viruses in Northern Brazil, 2010-2019. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191912665. [PMID: 36231964 PMCID: PMC9566075 DOI: 10.3390/ijerph191912665] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/15/2022] [Indexed: 05/02/2023]
Abstract
Environmental changes are among the main factors that contribute to the emergence or re-emergence of viruses of public health importance. Here, we show the impact of environmental modifications on cases of infections by the dengue, chikungunya and Zika viruses in humans in the state of Tocantins, Brazil, between the years 2010 and 2019. We conducted a descriptive and principal component analysis (PCA) to explore the main trends in environmental modifications and in the cases of human infections caused by these arboviruses in Tocantins. Our analysis demonstrated that the occurrence of El Niño, deforestation in the Cerrado and maximum temperatures had correlations with the cases of infections by the Zika virus between 2014 and 2016. El Niño, followed by La Niña, a gradual increase in precipitation and the maximum temperature observed between 2015 and 2017 were shown to have contributed to the infections by the chikungunya virus. La Niña and precipitation were associated with infections by the dengue virus between 2010 and 2012 and El Niño contributed to the 2019 outbreak observed within the state. By PCA, deforestation, temperatures and El Niño were the most important variables related to cases of dengue in humans. We conclude from this analysis that environmental changes (deforestation and climate change) presented a strong influence on the human infections caused by the dengue, chikungunya and Zika viruses in Tocantins from 2010 to 2019.
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Affiliation(s)
| | | | | | - James Hunter
- Retrovirology Laboratory, Federal University of São Paulo, São Paulo 04039-032, Brazil
| | - Ricardo Sobhie Diaz
- Retrovirology Laboratory, Federal University of São Paulo, São Paulo 04039-032, Brazil
| | - Fernando Shinji Kawakubo
- Faculty of Philosophy, Letters and Human Sciences, University of São Paulo, São Paulo 05508-000, Brazil
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10
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Catano-Lopez A, Rojas-Diaz D, Lizarralde-Bejarano DP, Puerta Yepes ME. Discrete Models in Epidemiology: New Contagion Probability Functions Based on Real Data Behavior. Bull Math Biol 2022; 84:127. [PMID: 36138179 PMCID: PMC9510274 DOI: 10.1007/s11538-022-01076-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022]
Abstract
Mathematical modeling is a tool used for understanding diseases dynamics. The discrete-time model is an especial case in modeling that satisfactorily describes the epidemiological dynamics because of the discrete nature of the real data. However, discrete models reduce their descriptive and fitting potential because of assuming a homogeneous population. Thus, in this paper, we proposed contagion probability functions according to two infection paradigms that consider factors associated with transmission dynamics. For example, we introduced probabilities of establishing an infectious interaction, the number of contacts with infectious and the level of connectivity or social distance within populations. Through the probabilities design, we overcame the homogeneity assumption. Also, we evaluated the proposed probabilities through their introduction into discrete-time models for two diseases and different study zones with real data, COVID-19 for Germany and South Korea, and dengue for Colombia. Also, we described the oscillatory dynamics for the last one using the contagion probabilities alongside parameters with a biological sense. Finally, we highlight the implementation of the proposed probabilities would improve the simulation of the public policy effect of control strategies over an infectious disease outbreak.
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Affiliation(s)
- Alexandra Catano-Lopez
- School of Applied Sciences and Engineering, Universidad EAFIT, Medellín, Antioquia Colombia
| | - Daniel Rojas-Diaz
- School of Applied Sciences and Engineering, Universidad EAFIT, Medellín, Antioquia Colombia
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11
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Latinne A, Morand S. Climate Anomalies and Spillover of Bat-Borne Viral Diseases in the Asia-Pacific Region and the Arabian Peninsula. Viruses 2022; 14:1100. [PMID: 35632842 PMCID: PMC9145311 DOI: 10.3390/v14051100] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/12/2022] [Accepted: 05/16/2022] [Indexed: 11/16/2022] Open
Abstract
Climate variability and anomalies are known drivers of the emergence and outbreaks of infectious diseases. In this study, we investigated the potential association between climate factors and anomalies, including El Niño Southern Oscillation (ENSO) and land surface temperature anomalies, as well as the emergence and spillover events of bat-borne viral diseases in humans and livestock in the Asia-Pacific region and the Arabian Peninsula. Our findings from time series analyses, logistic regression models, and structural equation modelling revealed that the spillover patterns of the Nipah virus in Bangladesh and the Hendra virus in Australia were differently impacted by climate variability and with different time lags. We also used event coincidence analysis to show that the emergence events of most bat-borne viral diseases in the Asia-Pacific region and the Arabian Peninsula were statistically associated with ENSO climate anomalies. Spillover patterns of the Nipah virus in Bangladesh and the Hendra virus in Australia were also significantly associated with these events, although the pattern and co-influence of other climate factors differed. Our results suggest that climate factors and anomalies may create opportunities for virus spillover from bats to livestock and humans. Ongoing climate change and the future intensification of El Niño events will therefore potentially increase the emergence and spillover of bat-borne viral diseases in the Asia-Pacific region and the Arabian Peninsula.
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Affiliation(s)
- Alice Latinne
- Wildlife Conservation Society, Viet Nam Country Program, Ha Noi 100000, Vietnam
- Wildlife Conservation Society, Global Conservation Program, Bronx, NY 10460, USA
- MIVEGEC, CNRS—IRD—Montpellier Université, 911 Avenue Agropolis, BP 6450, 34394 Montpellier, France;
- Faculty of Veterinary Technology, University of Kasetsart, Bangkok 10900, Thailand
| | - Serge Morand
- MIVEGEC, CNRS—IRD—Montpellier Université, 911 Avenue Agropolis, BP 6450, 34394 Montpellier, France;
- Faculty of Veterinary Technology, University of Kasetsart, Bangkok 10900, Thailand
- Faculty of Tropical Medicine, University of Mahidol, Bangkok 10400, Thailand
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12
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Ferreira HDS, Nóbrega RS, Brito PVDS, Farias JP, Amorim JH, Moreira EBM, Mendez ÉC, Luiz WB. Impacts of El Niño Southern Oscillation on the dengue transmission dynamics in the Metropolitan Region of Recife, Brazil. Rev Soc Bras Med Trop 2022; 55:e0671. [PMID: 35674563 PMCID: PMC9176733 DOI: 10.1590/0037-8682-0671-2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 04/13/2022] [Indexed: 11/28/2022] Open
Abstract
Background: This research addresses two questions: (1) how El Niño Southern Oscillation (ENSO) affects climate variability and how it influences dengue transmission in the Metropolitan Region of Recife (MRR), and (2) whether the epidemic in MRR municipalities has any connection and synchronicity. Methods: Wavelet analysis and cross-correlation were applied to characterize seasonality, multiyear cycles, and relative delays between the series. This study was developed into two distinct periods. Initially, we performed periodic dengue incidence and intercity epidemic synchronism analyses from 2001 to 2017. We then defined the period from 2001 to 2016 to analyze the periodicity of climatic variables and their coherence with dengue incidence. Results: Our results showed systematic cycles of 3-4 years with a recent shortening trend of 2-3 years. Climatic variability, such as positive anomalous temperatures and reduced rainfall due to changes in sea surface temperature (SST), is partially linked to the changing epidemiology of the disease, as this condition provides suitable environments for the Aedes aegypti lifecycle. Conclusion: ENSO may have influenced the dengue temporal patterns in the MRR, transiently reducing its main way of multiyear variability (3-4 years) to 2-3 years. Furthermore, when the epidemic coincided with El Niño years, it spread regionally and was highly synchronized.
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Affiliation(s)
| | - Ranyére Silva Nóbrega
- Universidade Federal de Pernambuco, Brasil; Universidade Federal de Campina Grande, Brasil
| | | | | | - Jaime Henrique Amorim
- Universidade Federal do Oeste da Bahia, Brasil; Universidade Estadual de Santa Cruz, Brasil
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Muñoz E, Poveda G, Arbeláez MP, Vélez ID. Spatiotemporal dynamics of dengue in Colombia in relation to the combined effects of local climate and ENSO. Acta Trop 2021; 224:106136. [PMID: 34555353 DOI: 10.1016/j.actatropica.2021.106136] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/27/2021] [Accepted: 09/06/2021] [Indexed: 12/27/2022]
Abstract
Dengue virus (DENV) is an endemic disease in the hot and humid low-lands of Colombia. We characterize the association of monthly series of dengue cases with indices of El Niño/Southern Oscillation (ENSO) at the tropical Pacific and local climatic variables in Colombia during the period 2007-2017 at different temporal and spatial scales. For estimation purposes, we use lagged cross-correlations (Pearson test), cross-wavelet analysis (wavelet cross spectrum, and wavelet coherence), as well as a novel nonlinear causality method, PCMCI, that allows identifying common causal drivers and links among high dimensional simultaneous and time-lagged variables. Our results evidence the strong association of DENV cases in Colombia with ENSO indices and with local temperature and rainfall. El Niño (La Niña) phenomenon is related to an increase (decrease) of dengue cases nationally and in most regions and departments, with maximum correlations occurring at shorter time lags in the Pacific and Andes regions, closer to the Pacific Ocean. This association is mainly explained by the ENSO-driven increase in temperature and decrease in rainfall, especially in the Andes and Pacific regions. The influence of ENSO is not stationary, given the reduction of DENV cases since 2005, and that local climate variables vary in space and time, which prevents to extrapolate results from one region to another. The association between DENV and ENSO varies at national and regional scales when data are disaggregated by seasons, being stronger in DJF and weaker in SON. Overall, the Pacific and Andes regions control the relationship between dengue dynamics and ENSO at national scale. Cross-wavelet analysis indicates that the ENSO-DENV relation in Colombia exhibits a strong coherence in the 12 to 16-months frequency band, which implies the frequency locking between the annual cycle and the interannual (ENSO) timescales. Results of nonlinear causality metrics reveal the complex concomitant effects of ENSO and local climate variables, while offering new insights to develop early warning systems for DENV in Colombia.
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Affiliation(s)
- Estefanía Muñoz
- World Mosquito Program, Colombia; Departamento de Geociencias y Medio Ambiente, Universidad Nacional de Colombia, Medellín, Colombia.
| | - Germán Poveda
- Departamento de Geociencias y Medio Ambiente, Universidad Nacional de Colombia, Medellín, Colombia
| | - M Patricia Arbeláez
- World Mosquito Program, Colombia; PECET, Universidad de Antioquia, Medellín, Colombia
| | - Iván D Vélez
- World Mosquito Program, Colombia; PECET, Universidad de Antioquia, Medellín, Colombia
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14
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Tunali M, Radin AA, Başıbüyük S, Musah A, Borges IVG, Yenigun O, Aldosery A, Kostkova P, dos Santos WP, Massoni T, Dutra LMM, Moreno GMM, de Lima CL, da Silva ACG, Ambrizzi T, da Rocha RP, Jones KE, Campos LC. A review exploring the overarching burden of Zika virus with emphasis on epidemiological case studies from Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:55952-55966. [PMID: 34495471 PMCID: PMC8500866 DOI: 10.1007/s11356-021-15984-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/11/2021] [Indexed: 05/13/2023]
Abstract
This paper explores the main factors for mosquito-borne transmission of the Zika virus by focusing on environmental, anthropogenic, and social risks. A literature review was conducted bringing together related information from this genre of research from peer-reviewed publications. It was observed that environmental conditions, especially precipitation, humidity, and temperature, played a role in the transmission. Furthermore, anthropogenic factors including sanitation, urbanization, and environmental pollution promote the transmission by affecting the mosquito density. In addition, socioeconomic factors such as poverty as well as social inequality and low-quality housing have also an impact since these are social factors that limit access to certain facilities or infrastructure which, in turn, promote transmission when absent (e.g., piped water and screened windows). Finally, the paper presents short-, mid-, and long-term preventative solutions together with future perspectives. This is the first review exploring the effects of anthropogenic aspects on Zika transmission with a special emphasis in Brazil.
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Affiliation(s)
- Merve Tunali
- Institute of Environmental Sciences, Boğaziçi University, Bebek, 34342 Istanbul, Turkey
| | | | - Selma Başıbüyük
- Institute of Environmental Sciences, Boğaziçi University, Bebek, 34342 Istanbul, Turkey
| | - Anwar Musah
- UCL Centre for Digital Public Health in Emergencies, Institute for Risk and Disaster Reduction, University College London, London, WC1E 6BT, London, UK
| | - Iuri Valerio Graciano Borges
- Departamento de Ciências Atmosféricas, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, SP 05508-090 Brazil
| | - Orhan Yenigun
- Institute of Environmental Sciences, Boğaziçi University, Bebek, 34342 Istanbul, Turkey
- School of Engineering, European University of Lefke, Lefke, North Cyprus, Turkey
| | - Aisha Aldosery
- UCL Centre for Digital Public Health in Emergencies, Institute for Risk and Disaster Reduction, University College London, London, WC1E 6BT, London, UK
| | - Patty Kostkova
- UCL Centre for Digital Public Health in Emergencies, Institute for Risk and Disaster Reduction, University College London, London, WC1E 6BT, London, UK
| | - Wellington P. dos Santos
- Department of Biomedical Engineering, Federal University of Pernambuco, Recife, PE 50740-550 Brazil
| | - Tiago Massoni
- Department Systems and Computing, Federal University of Campina Grande, Campina Grande, PB 58429-900 Brazil
| | - Livia Marcia Mosso Dutra
- Departamento de Ciências Atmosféricas, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, SP 05508-090 Brazil
| | - Giselle Machado Magalhaes Moreno
- Departamento de Ciências Atmosféricas, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, SP 05508-090 Brazil
| | - Clarisse Lins de Lima
- Polytechnic School of Pernambuco, University of Pernambuco (Poli-UPE), Recife, PE 50720-001 Brazil
| | - Ana Clara Gomes da Silva
- Department of Biomedical Engineering, Federal University of Pernambuco, Recife, PE 50740-550 Brazil
| | - Tércio Ambrizzi
- Departamento de Ciências Atmosféricas, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, SP 05508-090 Brazil
| | - Rosmeri Porfirio da Rocha
- Departamento de Ciências Atmosféricas, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, SP 05508-090 Brazil
| | - Kate E. Jones
- Department of Genetics, Evolution and Environment, Centre for Biodiversity and Environment Research, University College London, WC1E 6BT, London, UK
| | - Luiza C. Campos
- Department of Civil, Environmental and Geomatic Engineering, University College London, WC1E 6BT, London, UK
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15
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Lying in wait: the resurgence of dengue virus after the Zika epidemic in Brazil. Nat Commun 2021; 12:2619. [PMID: 33976183 PMCID: PMC8113494 DOI: 10.1038/s41467-021-22921-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/07/2021] [Indexed: 12/19/2022] Open
Abstract
After the Zika virus (ZIKV) epidemic in the Americas in 2016, both Zika and dengue incidence declined to record lows in many countries in 2017–2018, but in 2019 dengue resurged in Brazil, causing ~2.1 million cases. In this study we use epidemiological, climatological and genomic data to investigate dengue dynamics in recent years in Brazil. First, we estimate dengue virus force of infection (FOI) and model mosquito-borne transmission suitability since the early 2000s. Our estimates reveal that DENV transmission was low in 2017–2018, despite conditions being suitable for viral spread. Our study also shows a marked decline in dengue susceptibility between 2002 and 2019, which could explain the synchronous decline of dengue in the country, partially as a result of protective immunity from prior ZIKV and/or DENV infections. Furthermore, we performed phylogeographic analyses using 69 newly sequenced genomes of dengue virus serotype 1 and 2 from Brazil, and found that the outbreaks in 2018–2019 were caused by local DENV lineages that persisted for 5–10 years, circulating cryptically before and after the Zika epidemic. We hypothesize that DENV lineages may circulate at low transmission levels for many years, until local conditions are suitable for higher transmission, when they cause major outbreaks. Zika and dengue incidence in the Americas declined in 2017–2018, but dengue resurged in 2019 in Brazil. This study uses epidemiological, climatological and genomic data to show that the decline of dengue may be explained by protective immunity from pre-exposure to ZIKV and/or DENV in prior years.
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16
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Ghaisani NP, Sulistiawati S, Lusida MLI. CORRELATION BETWEEN CLIMATE FACTORS WITH DENGUE HEMORRHAGIC FEVER CASES IN SURABAYA 2007 – 2017. INDONESIAN JOURNAL OF TROPICAL AND INFECTIOUS DISEASE 2021. [DOI: 10.20473/ijtid.v9i1.16075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Dengue Hemorrhagic Fever (DHF) is a disease caused by dengue virus. DHF is mediated by the mosquito vector, the Aedes mosquito. The proliferation of dengue vector is influenced by many factors, one of which is climate factors. DHF is one of the main public health problems in Indonesia. Cases of dengue were first discovered in 1968 in the city of Jakarta and Surabaya. Currently Surabaya is one of the dengue endemic areas in Indonesia. . The case of DHF in the city of Surabaya can be said to be still quite high compared with another city in Indonesia, although there is a decrease in the number from year to year. When examined, many factors influence the high number of dengue cases in Surabaya, one of which is climate factor. Climate factors play a role in the proliferation of DHF vectors. Therefore, this study aims to examine for 10 years, namely in 2007 - 2017 whether there is a correlation between climate factors with dengue cases in the city of Surabaya., which in this study the climate factors used are rainfall, average temperature, and average air humidity. This research uses an analytical method namely Spearman on the SPSS software version 20. The results obtained that the case of DHF in the city of Surabaya has no relationship with climatic factors such as rainfall and average temperature with a significance value of the relationship p> 0.05. While the climate factor that has a relationship with DHF cases in Surabaya City is air humidity with a significance value of p <0.05 and has a positive relationship with the value of r = + 0.190. It can be concluded that not all climate factors have a relationship with the DHF case in Surabaya in 2007 - 2017, which has a relationship with the DHF case is air humidity.
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Dhewantara PW, Jamil KF, Fajar JK, Saktianggi PP, Nusa R, Garjito TA, Anwar S, Nainu F, Megawati D, Sasmono RT, Mudatsir M. Original Article: Decline of notified dengue infections in Indonesia in 2017: Discussion of the possible determinants. NARRA J 2021; 1:e23. [PMID: 38449778 PMCID: PMC10914056 DOI: 10.52225/narraj.v1i1.23] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 03/15/2021] [Indexed: 03/08/2024]
Abstract
This study was conducted to quantify the trend in dengue notifications in the country in 2017 and to explore the possible determinants. Annual nation-wide dengue notification data were obtained from the National Disease Surveillance of Ministry of Health of Indonesia. Annual incidence rate (IR) and case fatality rate (CFR) in 2017 and the previous years were quantified and compared. Correlations between annual larva free index (LFI), implementation coverage of integrated vector management (IVM), El Niño Southern Oscillation (Niño3.4), Dipole Mode Index (DMI), Zika virus seropositivity and the percent change in IR and CFR of dengue were examined. The change of dengue IR and CFRs were mapped. In 2017, dengue IR was declined by 71% (22.55 per 100,000 population) compared to 2016 (77.96 per 100,000 population) while the CFR was slightly reduced from 0.79% to 0.75%. Reduction in IR and CFR occurred in 94.1% and 70.1% out of 34 provinces, respectively. The trend of dengue IR seems to be influenced by Niño3.4 but there is no clear evidence that Niño3.4 is the main reason for dengue reduction in 2017. It is difficult to elucidate that the reduction of dengue in 2017 was associated with previous Zika outbreaks. In conclusion, there was a significant reduction on dengue notifications in Indonesia in 2017. Further investigation is needed to look at the role of climate on the decline of dengue IR at finer temporal scale. In addition, study on the role of cross-protective immunity generated by Zika infection on dengue incidence is also warranted.
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Affiliation(s)
- Pandji Wibawa Dhewantara
- Pangandaran Unit of Health Research and Development, National Institute of Health Research and Development (NIHRD), Ministry of Health, West Java, Indonesia
- UQ Spatial Epidemiology Laboratory, School of Veterinary Science, The University of Queensland, Gatton, Australia
| | - Kurnia F Jamil
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Internal Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Jonny Karunia Fajar
- Department of Internal Medicine, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Panji Probo Saktianggi
- Balai Pemantapan Kawasan Hutan Region XIV Kupang, Ministry of Environment and Forestry, Kupang, Indonesia
| | - Roy Nusa
- Vector Borne Disease Control, Research and Development Council, Ministry of Health, Jakarta, Indonesia
| | - Triwibowo Ambar Garjito
- Institute for Vector and Reservoir Control Research and Development, National Institute of Health Research and Development (NIHRD), Ministry of Health, Salatiga, Indonesia
| | - Samsul Anwar
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Firzan Nainu
- Faculty of Pharmacy, Hasanuddin University, Tamalanrea, Makassar, Indonesia
| | - Dewi Megawati
- Department of Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Warmadewa University, Denpasar, Indonesia
- Department of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, California, USA
| | | | - Mudatsir Mudatsir
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
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18
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Paniz-Mondolfi AE, van den Akker T, Márquez-Colmenarez MC, Delgado-Noguera LA, Valderrama O, Sordillo EM. Kawasaki disease seasonality in Venezuela supports an arbovirus infection trigger. J Med Virol 2020; 92:2903-2910. [PMID: 32740967 DOI: 10.1002/jmv.26381] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 11/08/2022]
Abstract
Kawasaki disease (KD) is an inflammatory disease primarily affecting infants and young children, whose etiology remains uncertain. Observational studies of the overlap between KD outbreaks and seasonal peaks of arboviral infections, suggest the possible role of these pathogens as triggers of KD. In Venezuela, regions with the highest reported arboviral infections simultaneously have the highest incidence of KD. One proposed explanation for this association involves the role of proinflammatory mediators, interleukin-1 (IL-1), IL-6, tumor necrosis factor, and vascular endothelial growth factor as mediators of coronary endothelial damage. The promotion of inflammation and tissue destruction by these cytokines is thought to contribute to the coronary endothelial damage experienced in KD. The utilization of overlapping KD and arboviral infection trends contribute to the comprehension of KD etiology, with improvements in diagnosis, prognosis and treatment.
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Affiliation(s)
- Alberto E Paniz-Mondolfi
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
- Academia Nacional de Medicina de Venezuela, Caracas, Venezuela
| | - Tayler van den Akker
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Marilianna C Márquez-Colmenarez
- Division of Infectious Diseases, Instituto de Investigaciones Biomedicas IDB, Emerging Pathogens Network-Incubadora Venezolana de la Ciencia, Cabudare, Venezuela
| | - Lourdes A Delgado-Noguera
- Division of Infectious Diseases, Instituto de Investigaciones Biomedicas IDB, Emerging Pathogens Network-Incubadora Venezolana de la Ciencia, Cabudare, Venezuela
| | - Omar Valderrama
- Division of Infectious Diseases, Instituto de Investigaciones Biomedicas IDB, Emerging Pathogens Network-Incubadora Venezolana de la Ciencia, Cabudare, Venezuela
| | - Emilia M Sordillo
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
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Lowe R, Lee S, Martins Lana R, Torres Codeço C, Castro MC, Pascual M. Emerging arboviruses in the urbanized Amazon rainforest. BMJ 2020; 371:m4385. [PMID: 33187952 PMCID: PMC7664915 DOI: 10.1136/bmj.m4385] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rachel Lowe
- Centre on Climate Change and Planetary Health, London School of Hygiene and Tropical Medicine, London, UK
- Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, UK
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain
| | - Sophie Lee
- Centre on Climate Change and Planetary Health, London School of Hygiene and Tropical Medicine, London, UK
- Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, UK
| | - Raquel Martins Lana
- Programa de Computação Científica, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Marcia C Castro
- Department of Global Health and Population, Harvard T H Chan School of Public Health, Boston, Massachusetts, USA
| | - Mercedes Pascual
- Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, USA
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20
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Pramanik M, Singh P, Kumar G, Ojha VP, Dhiman RC. El Niño Southern Oscillation as an early warning tool for dengue outbreak in India. BMC Public Health 2020; 20:1498. [PMID: 33008350 PMCID: PMC7532593 DOI: 10.1186/s12889-020-09609-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 09/24/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Dengue is rapidly expanding climate-sensitive mosquito-borne disease worldwide. Outbreaks of dengue occur in various parts of India as well but there is no tool to provide early warning. The current study was, therefore, undertaken to find out the link between El Niño, precipitation, and dengue cases, which could help in early preparedness for control of dengue. METHODS Data on Oceanic Niño Index (ONI) was extracted from CPC-IRI (USA) while the data on monthly rainfall was procured from India Meteorological Department. Data on annual dengue cases was taken from the website of National Vector Borne Disease Control Programme (NVBDCP). Correlation analysis was used to analyse the relationship between seasonal positive ONI, rainfall index and dengue case index based on past 20 years' state-level data. The dengue case index representing 'relative deviation from mean' was correlated to the 3 months average ONI. The computed r values of dengue case index and positive ONI were further interpreted using generated spatial correlation map. The short-term prediction of dengue probability map has been prepared based on phase-wise (El Niño, La Niña, and Neutral) 20 years averaged ONI. RESULTS A high correlation between positive ONI and dengue incidence was found, particularly in the states of Arunachal Pradesh, Chhattisgarh, Haryana, Uttarakhand, Andaman and Nicobar Islands, Delhi, Daman and Diu. The states like Assam, Himachal Pradesh, Meghalaya, Manipur, Mizoram, Jammu & Kashmir, Uttar Pradesh, Orissa, and Andhra Pradesh shown negative correlation between summer El Niño and dengue incidence. Two - three month lag was found between monthly 'rainfall index' and dengue cases at local-scale analysis. CONCLUSION The generated map signifies the spatial correlation between positive ONI and dengue case index, indicating positive correlation in the central part, while negative correlation in some coastal, northern, and north-eastern part of India. The findings offer a tool for early preparedness for undertaking intervention measures against dengue by the national programme at state level. For further improvement of results, study at micro-scale district level for finding month-wise association with Indian Ocean Dipole and local weather variables is desired for better explanation of dengue outbreaks in the states with 'no association'.
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Affiliation(s)
- Malay Pramanik
- ICMR-National Institute of Malaria Research, New Delhi, 110077, India
| | - Poonam Singh
- ICMR-National Institute of Malaria Research, New Delhi, 110077, India
| | - Gaurav Kumar
- ICMR-National Institute of Malaria Research, New Delhi, 110077, India
| | - V P Ojha
- ICMR-National Institute of Malaria Research, New Delhi, 110077, India
| | - Ramesh C Dhiman
- ICMR-National Institute of Malaria Research, New Delhi, 110077, India.
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21
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Desjardins MR, Eastin MD, Paul R, Casas I, Delmelle EM. Space-Time Conditional Autoregressive Modeling to Estimate Neighborhood-Level Risks for Dengue Fever in Cali, Colombia. Am J Trop Med Hyg 2020; 103:2040-2053. [PMID: 32876013 PMCID: PMC7646775 DOI: 10.4269/ajtmh.20-0080] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Vector-borne diseases affect more than 1 billion people a year worldwide, causing more than 1 million deaths, and cost hundreds of billions of dollars in societal costs. Mosquitoes are the most common vectors responsible for transmitting a variety of arboviruses. Dengue fever (DENF) has been responsible for nearly 400 million infections annually. Dengue fever is primarily transmitted by female Aedes aegypti and Aedes albopictus mosquitoes. Because both Aedes species are peri-domestic and container-breeding mosquitoes, dengue surveillance should begin at the local level—where a variety of local factors may increase the risk of transmission. Dengue has been endemic in Colombia for decades and is notably hyperendemic in the city of Cali. For this study, we use weekly cases of DENF in Cali, Colombia, from 2015 to 2016 and develop space–time conditional autoregressive models to quantify how DENF risk is influenced by socioeconomic, environmental, and accessibility risk factors, and lagged weather variables. Our models identify high-risk neighborhoods for DENF throughout Cali. Statistical inference is drawn under Bayesian paradigm using Markov chain Monte Carlo techniques. The results provide detailed insight about the spatial heterogeneity of DENF risk and the associated risk factors (such as weather, proximity to Aedes habitats, and socioeconomic classification) at a fine level, informing public health officials to motivate at-risk neighborhoods to take an active role in vector surveillance and control, and improving educational and surveillance resources throughout the city of Cali.
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Affiliation(s)
- Michael R Desjardins
- Department of Epidemiology, Spatial Science for Public Health Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Matthew D Eastin
- Department of Geography and Earth Sciences, Center for Applied Geographic Information Science, University of North Carolina at Charlotte, Charlotte, North Carolina
| | - Rajib Paul
- Department of Public Health Sciences, University of North Carolina at Charlotte, Charlotte, North Carolina
| | - Irene Casas
- School of History and Social Sciences, Louisiana Tech University, Ruston, Louisiana
| | - Eric M Delmelle
- Department of Geography and Earth Sciences, Center for Applied Geographic Information Science, University of North Carolina at Charlotte, Charlotte, North Carolina
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22
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Sedda L, Taylor BM, Eiras AE, Marques JT, Dillon RJ. Using the intrinsic growth rate of the mosquito population improves spatio-temporal dengue risk estimation. Acta Trop 2020; 208:105519. [PMID: 32389450 PMCID: PMC7315132 DOI: 10.1016/j.actatropica.2020.105519] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/25/2020] [Accepted: 04/25/2020] [Indexed: 12/29/2022]
Abstract
Understanding geographic population dynamics of mosquitoes is an essential requirement for estimating the risk of mosquito-borne disease transmission and geographically targeted interventions. However, the use of population dynamics measures, such as the intrinsic growth rate, as predictors in spatio-temporal point processes has not been investigated before. In this work we compared the predictive accuracy of four spatio-temporal log-Gaussian Cox models: (i) With no predictors; (ii) mosquito abundance as predictor; (iii) intrinsic growth rate as predictor; (iv) intrinsic growth rate and mosquito abundance as predictors. This analysis is based on Aedes aegypti mosquito surveillance and human dengue data obtained from the urban area of Caratinga, Brazil. We used a statistical Moran Curve approach to estimate the intrinsic growth rate and a zero inflated Poisson kriging model for estimating mosquito abundance at locations of dengue cases. The incidence of dengue cases was positively associated with mosquito intrinsic growth rate and this model outperformed, in terms of predictive accuracy, the abundance and the null models. The latter includes only the spatio-temporal random effect but no predictors. In the light of these results we suggest that the intrinsic growth rate should be investigated further as a potential tool for predicting the risk of dengue transmission and targeting health interventions for vector-borne diseases.
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Affiliation(s)
- Luigi Sedda
- Lancaster Medical School, Furness Building, Lancaster University, Lancaster, LA1 4YG, UK.
| | - Benjamín M Taylor
- Centre for Health Informatics, Computing, and Statistics (CHICAS), Lancaster Medical School, Furness Building, Lancaster University, Lancaster, LA1 4YG, UK
| | - Alvaro E Eiras
- Department of Parasitology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, CEP 30270-901, Brazil
| | - João Trindade Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, CEP 30270-901, Brazil; Institut de biologie moléculaire et cellulaire, Université de Strasbourg, CNRS UPR9022, Inserm U1257, 67084 Strasbourrg, France
| | - Rod J Dillon
- Biomedical and Life Sciences, Furness Building, Lancaster University, Lancaster, LA1 4YG, UK
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23
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Subramanian R, Romeo-Aznar V, Ionides E, Codeço CT, Pascual M. Predicting re-emergence times of dengue epidemics at low reproductive numbers: DENV1 in Rio de Janeiro, 1986-1990. J R Soc Interface 2020; 17:20200273. [PMID: 32574544 PMCID: PMC7328382 DOI: 10.1098/rsif.2020.0273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Predicting arbovirus re-emergence remains challenging in regions with limited off-season transmission and intermittent epidemics. Current mathematical models treat the depletion and replenishment of susceptible (non-immune) hosts as the principal drivers of re-emergence, based on established understanding of highly transmissible childhood diseases with frequent epidemics. We extend an analytical approach to determine the number of ‘skip’ years preceding re-emergence for diseases with continuous seasonal transmission, population growth and under-reporting. Re-emergence times are shown to be highly sensitive to small changes in low R0 (secondary cases produced from a primary infection in a fully susceptible population). We then fit a stochastic Susceptible–Infected–Recovered (SIR) model to observed case data for the emergence of dengue serotype DENV1 in Rio de Janeiro. This aggregated city-level model substantially over-estimates observed re-emergence times either in terms of skips or outbreak probability under forward simulation. The inability of susceptible depletion and replenishment to explain re-emergence under ‘well-mixed’ conditions at a city-wide scale demonstrates a key limitation of SIR aggregated models, including those applied to other arboviruses. The predictive uncertainty and high skip sensitivity to epidemiological parameters suggest a need to investigate the relevant spatial scales of susceptible depletion and the scaling of microscale transmission dynamics to formulate simpler models that apply at coarse resolutions.
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Affiliation(s)
- Rahul Subramanian
- Division of Biological Sciences, University of Chicago, Chicago, IL, USA
| | - Victoria Romeo-Aznar
- Department of Ecology and Evolution, and, University of Chicago, Chicago, IL, USA.,Manseuto Institute for Urban Innovation, University of Chicago, Chicago, IL, USA
| | - Edward Ionides
- Department of Statistics, University of Michigan, Ann Arbor, MI, USA
| | - Claudia T Codeço
- Programa de Computação Científica, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Mercedes Pascual
- Department of Ecology and Evolution, and, University of Chicago, Chicago, IL, USA.,Santa Fe Institute, Santa Fe, NM, USA
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24
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El Niño Southern Oscillation, overseas arrivals and imported chikungunya cases in Australia: A time series analysis. PLoS Negl Trop Dis 2019; 13:e0007376. [PMID: 31107863 PMCID: PMC6544329 DOI: 10.1371/journal.pntd.0007376] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 05/31/2019] [Accepted: 04/09/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Chikungunya virus (CHIKV) is an emerging mosquito-borne pathogen circulating in tropical and sub-tropical regions. Although autochthonous transmission has not been reported in Australia, there is a potential risk of local CHIKV outbreaks due to the presence of suitable vectors, global trade, frequent international travel and human adaptation to changes in climate. METHODOLOGY/PRINCIPAL FINDINGS A time series seasonal decomposition method was used to investigate the seasonality and trend of monthly imported CHIKV cases. This pattern was compared with the seasonality and trend of monthly overseas arrivals. A wavelet coherence analysis was applied to examine the transient relationships between monthly imported CHIKV cases and southern oscillation index (SOI) in time-frequency space. We found that the number and geographical distribution of countries of acquisition for CHIKV in travellers to Australia has increased in recent years. The number of monthly imported CHIKV cases displayed an unstable increased trend compared with a stable linear increased trend in monthly overseas arrivals. Both imported CHIKV cases and overseas arrivals showed substantial seasonality, with the strongest seasonal effects in each January, followed by each October and July. The wavelet coherence analysis identified four significant transient relationships between monthly imported CHIKV cases and 6-month lagged moving average SOI, in the years 2009-2010, 2012, 2014 and 2015-2016. CONCLUSION/SIGNIFICANCE High seasonal peaks of imported CHIKV cases were consistent with the high seasonal peaks of overseas arrivals into Australia. Our analysis also indicates that El Niño Southern Oscillation (ENSO) variation may impact CHIKV epidemics in endemic regions, in turn influencing the pattern of imported cases.
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25
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Silva FB, Santos JRN, da Silva LC, Gomes WC, Villis PCM, Gomes EDS, Pinheiro EDAD, Azevedo CDMPESD, Dias RDS, Monteiro CDA, Santos JRA. Climate drivers of hospitalizations for mycoses in Brazil. Sci Rep 2019; 9:6902. [PMID: 31061460 PMCID: PMC6502841 DOI: 10.1038/s41598-019-43353-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 04/18/2019] [Indexed: 01/26/2023] Open
Abstract
Climate can modulate human health at large spatial scales, but the influence of global, regional, and local environments remains poorly understood, especially for neglected diseases, such as mycoses. In this work, we present the correlation between climatic variables and hospitalizations for mycoses in Brazilian state capitals, evaluating the period of 2008 to 2016 at different time scales. The results indicate that climate modulates the hospitalizations for mycoses differently at annual and monthly time scales, with minimum temperature as a key climatic variable during periods of high prevalence in the 10 Brazilian capitals with the highest hospitalizations for mycoses rates. The greatest number of hospitalizations coincided with La Niña events, while a reduction was observed during El Niño events, thereby demonstrating the influence of the Pacific Interdecadal Climate Oscillation on the prevalence of mycoses in Brazil. At a regional scale, the mycoses burden in Brazil appears to respond differently to local and global climatic drivers.
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Affiliation(s)
- Fabrício Brito Silva
- Mestrado em Meio Ambiente - Universidade CEUMA (UNICEUMA), São Luís, Maranhão, Brazil
| | | | | | - Wolia Costa Gomes
- Mestrado em Meio Ambiente - Universidade CEUMA (UNICEUMA), São Luís, Maranhão, Brazil
| | | | - Eliane Dos Santos Gomes
- Discente do Curso de Engenharia Ambiental - Universidade CEUMA (UNICEUMA), São Luís, Maranhão, Brazil
| | - Edilene de Araújo Diniz Pinheiro
- Mestrado em Meio Ambiente - Universidade CEUMA (UNICEUMA), São Luís, Maranhão, Brazil.,Discente do Curso de Biomedicina - Universidade CEUMA (UNICEUMA), São Luís, Maranhão, Brazil
| | | | - Rosane da Silva Dias
- Mestrado em Gestão de Programas e Serviços de Saúde - Universidade CEUMA (UNICEUMA), São Luís, Maranhão, Brazil
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26
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Grillet ME, Hernández-Villena JV, Llewellyn MS, Paniz-Mondolfi AE, Tami A, Vincenti-Gonzalez MF, Marquez M, Mogollon-Mendoza AC, Hernandez-Pereira CE, Plaza-Morr JD, Blohm G, Grijalva MJ, Costales JA, Ferguson HM, Schwabl P, Hernandez-Castro LE, Lamberton PHL, Streicker DG, Haydon DT, Miles MA, Acosta-Serrano A, Acquattela H, Basañez MG, Benaim G, Colmenares LA, Conn JE, Espinoza R, Freilij H, Graterol-Gil MC, Hotez PJ, Kato H, Lednicky JA, Martinez CE, Mas-Coma S, Morris JG, Navarro JC, Ramirez JL, Rodriguez M, Urbina JA, Villegas L, Segovia MJ, Carrasco HJ, Crainey JL, Luz SLB, Moreno JD, Noya Gonzalez OO, Ramírez JD, Alarcón-de Noya B. Venezuela's humanitarian crisis, resurgence of vector-borne diseases, and implications for spillover in the region. THE LANCET. INFECTIOUS DISEASES 2019; 19:e149-e161. [PMID: 30799251 DOI: 10.1016/s1473-3099(18)30757-6] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 11/14/2018] [Accepted: 11/28/2018] [Indexed: 01/19/2023]
Abstract
In the past 5-10 years, Venezuela has faced a severe economic crisis, precipitated by political instability and declining oil revenue. Public health provision has been affected particularly. In this Review, we assess the impact of Venezuela's health-care crisis on vector-borne diseases, and the spillover into neighbouring countries. Between 2000 and 2015, Venezuela witnessed a 359% increase in malaria cases, followed by a 71% increase in 2017 (411 586 cases) compared with 2016 (240 613). Neighbouring countries, such as Brazil, have reported an escalating trend of imported malaria cases from Venezuela, from 1538 in 2014 to 3129 in 2017. In Venezuela, active Chagas disease transmission has been reported, with seroprevalence in children (<10 years), estimated to be as high as 12·5% in one community tested (n=64). Dengue incidence increased by more than four times between 1990 and 2016. The estimated incidence of chikungunya during its epidemic peak is 6975 cases per 100 000 people and that of Zika virus is 2057 cases per 100 000 people. The re-emergence of many vector-borne diseases represents a public health crisis in Venezuela and has the possibility of severely undermining regional disease elimination efforts. National, regional, and global authorities must take action to address these worsening epidemics and prevent their expansion beyond Venezuelan borders.
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Affiliation(s)
- Maria E Grillet
- Instituto de Zoología y Ecología Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | | | - Martin S Llewellyn
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK.
| | - Alberto E Paniz-Mondolfi
- Infectious Diseases Research Incubator and the Zoonosis and Emerging Pathogens Regional Collaborative Network, Department of Tropical Medicine and Infectious Diseases, Instituto de Investigaciones Biomédicas IDB, Clinica IDB Cabudare, Cabudare, Venezuela; Instituto de Estudios Avanzados, Caracas, Venezuela
| | - Adriana Tami
- Department of Medical Microbiology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands; Facultad de Ciencias de la Salud, Universidad de Carabobo, Valencia, Venezuela
| | - Maria F Vincenti-Gonzalez
- Department of Medical Microbiology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Marilianna Marquez
- Infectious Diseases Research Incubator and the Zoonosis and Emerging Pathogens Regional Collaborative Network, Department of Tropical Medicine and Infectious Diseases, Instituto de Investigaciones Biomédicas IDB, Clinica IDB Cabudare, Cabudare, Venezuela; Health Sciences Department, College of Medicine, Universidad Centrooccidental Lisandro Alvarado, Barquisimeto, Lara State, Venezuela
| | - Adriana C Mogollon-Mendoza
- Infectious Diseases Research Incubator and the Zoonosis and Emerging Pathogens Regional Collaborative Network, Department of Tropical Medicine and Infectious Diseases, Instituto de Investigaciones Biomédicas IDB, Clinica IDB Cabudare, Cabudare, Venezuela; Health Sciences Department, College of Medicine, Universidad Centrooccidental Lisandro Alvarado, Barquisimeto, Lara State, Venezuela
| | - Carlos E Hernandez-Pereira
- Infectious Diseases Research Incubator and the Zoonosis and Emerging Pathogens Regional Collaborative Network, Department of Tropical Medicine and Infectious Diseases, Instituto de Investigaciones Biomédicas IDB, Clinica IDB Cabudare, Cabudare, Venezuela; Health Sciences Department, College of Medicine, Universidad Centrooccidental Lisandro Alvarado, Barquisimeto, Lara State, Venezuela
| | - Juan D Plaza-Morr
- Infectious Diseases Research Incubator and the Zoonosis and Emerging Pathogens Regional Collaborative Network, Department of Tropical Medicine and Infectious Diseases, Instituto de Investigaciones Biomédicas IDB, Clinica IDB Cabudare, Cabudare, Venezuela; Health Sciences Department, College of Medicine, Universidad Nacional Experimental Francisco de Miranda, Punto Fijo, Falcón State, Venezuela
| | - Gabriella Blohm
- Infectious Diseases Research Incubator and the Zoonosis and Emerging Pathogens Regional Collaborative Network, Department of Tropical Medicine and Infectious Diseases, Instituto de Investigaciones Biomédicas IDB, Clinica IDB Cabudare, Cabudare, Venezuela; Emerging Pathogens Institute, Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
| | - Mario J Grijalva
- Infectious and Tropical Disease Institute, Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA
| | - Jaime A Costales
- Center for Research on Health in Latin America, Escuela de Ciencias Biológicas, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - Heather M Ferguson
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Philipp Schwabl
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | | | - Poppy H L Lamberton
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Daniel G Streicker
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK; MRC-University of Glasgow Centre for Virus Research, University of Glasgow, Glasgow, UK
| | - Daniel T Haydon
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Michael A Miles
- Department of Pathogen Molecular Biology, London School of Hygiene & Tropical Medicine, London, UK
| | - Alvaro Acosta-Serrano
- Department of Vector Biology and Department of Parasitology, Liverpool School of Tropical Medicine, Liverpool, UK
| | | | - Maria G Basañez
- Department of Vector Biology and Department of Parasitology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Gustavo Benaim
- Instituto de Biología Experimental, Universidad Central de Venezuela, Caracas, Venezuela; Instituto de Estudios Avanzados, Caracas, Venezuela
| | - Luis A Colmenares
- Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Jan E Conn
- Griffin Laboratory, Wadsworth Center, New York State Department of Health, Albany, NY, USA; School of Public Health, University at Albany, NY, USA
| | - Raul Espinoza
- Hospital Miguel Pérez Carreño, Instituto Venezolano de los Seguros Sociales, Caracas, Venezuela
| | - Hector Freilij
- Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Mary C Graterol-Gil
- Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Peter J Hotez
- National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Hirotomo Kato
- Division of Medical Zoology, Department of Infection and Immunity, Jichi Medical University, Tochigi, Japan
| | - John A Lednicky
- Emerging Pathogens Institute, Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
| | - Clara E Martinez
- Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Santiago Mas-Coma
- Departamento de Parasitología, Universidad de Valencia, Valencia, Spain
| | - J Glen Morris
- Emerging Pathogens Institute, Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
| | - Juan C Navarro
- Enfermedades Emergentes y Salud Ambiental, Centro de Biodiversidad, Universidad Internacional SEK, Quito, Ecuador
| | - Jose L Ramirez
- Biotechnology Center, Instituto de Estudios Avanzados, Caracas, Venezuela
| | - Marlenes Rodriguez
- Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Julio A Urbina
- Venezuelan Institute for Scientific Research, Caracas, Venezuela
| | | | - Maikell J Segovia
- Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Hernan J Carrasco
- Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - James L Crainey
- Instituto Leônidas e Maria Deane ILMD/FIOCRUZ, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Amazonas, Brazil
| | - Sergio L B Luz
- Instituto Leônidas e Maria Deane ILMD/FIOCRUZ, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Amazonas, Brazil
| | - Juan D Moreno
- Centro de Investigaciones de Campo "Dr Francesco Vitanza", Servicio Autónomo Instituto de Altos Estudios "Dr Arnoldo Gabaldon", MPPS, Tumeremo, Venezuela
| | - Oscar O Noya Gonzalez
- Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela; Centro de Investigaciones de Campo "Dr Francesco Vitanza", Servicio Autónomo Instituto de Altos Estudios "Dr Arnoldo Gabaldon", MPPS, Tumeremo, Venezuela
| | - Juan D Ramírez
- Grupo de Investigaciones Microbiológicas-UR, Programa de Biología, Universidad del Rosario, Bogotá, Colombia
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Global Disease Outbreaks Associated with the 2015-2016 El Niño Event. Sci Rep 2019; 9:1930. [PMID: 30760757 PMCID: PMC6374399 DOI: 10.1038/s41598-018-38034-z] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 12/18/2018] [Indexed: 11/16/2022] Open
Abstract
Interannual climate variability patterns associated with the El Niño-Southern Oscillation phenomenon result in climate and environmental anomaly conditions in specific regions worldwide that directly favor outbreaks and/or amplification of variety of diseases of public health concern including chikungunya, hantavirus, Rift Valley fever, cholera, plague, and Zika. We analyzed patterns of some disease outbreaks during the strong 2015–2016 El Niño event in relation to climate anomalies derived from satellite measurements. Disease outbreaks in multiple El Niño-connected regions worldwide (including Southeast Asia, Tanzania, western US, and Brazil) followed shifts in rainfall, temperature, and vegetation in which both drought and flooding occurred in excess (14–81% precipitation departures from normal). These shifts favored ecological conditions appropriate for pathogens and their vectors to emerge and propagate clusters of diseases activity in these regions. Our analysis indicates that intensity of disease activity in some ENSO-teleconnected regions were approximately 2.5–28% higher during years with El Niño events than those without. Plague in Colorado and New Mexico as well as cholera in Tanzania were significantly associated with above normal rainfall (p < 0.05); while dengue in Brazil and southeast Asia were significantly associated with above normal land surface temperature (p < 0.05). Routine and ongoing global satellite monitoring of key climate variable anomalies calibrated to specific regions could identify regions at risk for emergence and propagation of disease vectors. Such information can provide sufficient lead-time for outbreak prevention and potentially reduce the burden and spread of ecologically coupled diseases.
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28
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Craciunescu T, Murari A, Gelfusa M. Improving Entropy Estimates of Complex Network Topology for the Characterization of Coupling in Dynamical Systems. ENTROPY (BASEL, SWITZERLAND) 2018; 20:e20110891. [PMID: 33266615 PMCID: PMC7512473 DOI: 10.3390/e20110891] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/13/2018] [Accepted: 11/19/2018] [Indexed: 05/25/2023]
Abstract
A new measure for the characterization of interconnected dynamical systems coupling is proposed. The method is based on the representation of time series as weighted cross-visibility networks. The weights are introduced as the metric distance between connected nodes. The structure of the networks, depending on the coupling strength, is quantified via the entropy of the weighted adjacency matrix. The method has been tested on several coupled model systems with different individual properties. The results show that the proposed measure is able to distinguish the degree of coupling of the studied dynamical systems. The original use of the geodesic distance on Gaussian manifolds as a metric distance, which is able to take into account the noise inherently superimposed on the experimental data, provides significantly better results in the calculation of the entropy, improving the reliability of the coupling estimates. The application to the interaction between the El Niño Southern Oscillation (ENSO) and the Indian Ocean Dipole and to the influence of ENSO on influenza pandemic occurrence illustrates the potential of the method for real-life problems.
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Affiliation(s)
- Teddy Craciunescu
- National Institute for Laser, Plasma and Radiation Physics, RO-077125 Magurele-Bucharest, Romania
| | - Andrea Murari
- Consorzio RFX (CNR, ENEA, INFN, Universita’ di Padova, Acciaierie Venete SpA), 35127 Padova, Italy
- EUROfusion Consortium, JET, Culham Science Centre, Abingdon OX14 3DB, UK
| | - Michela Gelfusa
- Department of Industrial Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
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29
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Carbajo AE, Cardo MV, Guimarey PC, Lizuain AA, Buyayisqui MP, Varela T, Utgés ME, Giovacchini CM, Santini MS. Is autumn the key for dengue epidemics in non endemic regions? The case of Argentina. PeerJ 2018; 6:e5196. [PMID: 30038860 PMCID: PMC6054063 DOI: 10.7717/peerj.5196] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/13/2018] [Indexed: 12/27/2022] Open
Abstract
Background Dengue is a major and rapidly increasing public health problem. In Argentina, the southern extreme of its distribution in the Americas, epidemic transmission takes place during the warm season. Since its re-emergence in 1998 two major outbreaks have occurred, the biggest during 2016. To identify the environmental factors that trigger epidemic events, we analyzed the occurrence and magnitude of dengue outbreaks in time and space at different scales in association with climatic, geographic and demographic variables and number of cases in endemic neighboring countries. Methods Information on dengue cases was obtained from dengue notifications reported in the National Health Surveillance System. The resulting database was analyzed by Generalized Linear Mixed Models (GLMM) under three methodological approaches to: identify in which years the most important outbreaks occurred in association with environmental variables and propose a risk estimation for future epidemics (temporal approach); characterize which variables explain the occurrence of local outbreaks through time (spatio-temporal approach); and select the environmental drivers of the geographical distribution of dengue positive districts during 2016 (spatial approach). Results Within the temporal approach, the number of dengue cases country-wide between 2009 and 2016 was positively associated with the number of dengue cases in bordering endemic countries and negatively with the days necessary for transmission (DNT) during the previous autumn in the central region of the country. Annual epidemic intensity in the period between 1999–2016 was associated with DNT during previous autumn and winter. Regarding the spatio-temporal approach, dengue cases within a district were also associated with mild conditions in the previous autumn along with the number of dengue cases in neighboring countries. As for the spatial approach, the best model for the occurrence of two or more dengue cases per district included autumn minimum temperature and human population as fixed factors, and the province as a grouping variable. Explanatory power of all models was high, in the range 57–95%. Discussion Given the epidemic nature of dengue in Argentina, virus pressure from endemic neighboring countries along with climatic conditions are crucial to explain disease dynamics. In the three methodological approaches, temperature conditions during autumn were best associated with dengue patterns. We propose that mild autumns represent an advantage for mosquito vector populations and that, in temperate regions, this advantage manifests as a larger egg bank from which the adult population will re-emerge in spring. This may constitute a valuable anticipating tool for high transmission risk events.
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Affiliation(s)
- Anibal E Carbajo
- Universidad Nacional de San Martin, Instituto de Investigacion e Ingenieria Ambiental, Laboratorio de Ecologia de Enfermedades Transmitidas por Vectores, General San Martin, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina
| | - Maria V Cardo
- Universidad Nacional de San Martin, Instituto de Investigacion e Ingenieria Ambiental, Laboratorio de Ecologia de Enfermedades Transmitidas por Vectores, General San Martin, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina
| | - Pilar C Guimarey
- Centro Nacional de Diagnóstico e Investigación en Endemo-epidemias CeNDIE - ANLIS, Ministerio de Salud de la Nacion, Buenos Aires, Argentina
| | - Arturo A Lizuain
- Centro Nacional de Diagnóstico e Investigación en Endemo-epidemias CeNDIE - ANLIS, Ministerio de Salud de la Nacion, Buenos Aires, Argentina
| | - Maria P Buyayisqui
- Área de Vigilancia de la Salud, Dirección de Epidemiología, Ministerio de Salud de la Nación, Buenos Aires, Argentina
| | - Teresa Varela
- Área de Vigilancia de la Salud, Dirección de Epidemiología, Ministerio de Salud de la Nación, Buenos Aires, Argentina
| | - Maria E Utgés
- Centro Nacional de Diagnóstico e Investigación en Endemo-epidemias CeNDIE - ANLIS, Ministerio de Salud de la Nacion, Buenos Aires, Argentina
| | - Carlos M Giovacchini
- Área de Vigilancia de la Salud, Dirección de Epidemiología, Ministerio de Salud de la Nación, Buenos Aires, Argentina
| | - Maria S Santini
- Centro Nacional de Diagnóstico e Investigación en Endemo-epidemias CeNDIE - ANLIS, Ministerio de Salud de la Nacion, Buenos Aires, Argentina
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