Spatio-temporal dynamics of dengue 2009 outbreak in Córdoba City, Argentina

Estallo, Elizabet Lilia; Carbajo, Aníbal Eduardo; Grech, Marta G.; Frías-Céspedes, Maria; López, Laura; Lanfri, Mario; Ludueña-Almeida, Francisco; Almirón, Walter Ricardo

doi:10.1016/j.actatropica.2014.04.024

Cited by 39 publications

(38 citation statements)

References 19 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dengue outbreaks in the warm northern part of Argentina are directly associated with occurrence of the virus circulating in neighboring countries (Paraguay, Brazil and Bolivia) [ 9 ]. A major dengue outbreak in 2009 reached temperate regions of central Argentina, including large cities such as Buenos Aires [ 10 ] and Córdoba [ 4 ], although 92% of cases were reported in the northern provinces of Chaco (46%), Catamarca (36%) and Salta (10%) [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Weather Variability Associated with Aedes (Stegomyia) aegypti (Dengue Vector) Oviposition Dynamics in Northwestern Argentina

et al. 2015

View full text Add to dashboard Cite

This study aims to develop a forecasting model by assessing the weather variability associated with seasonal fluctuation of Aedes aegypti oviposition dynamic at a city level in Orán, in northwestern Argentina. Oviposition dynamics were assessed by weekly monitoring of 90 ovitraps in the urban area during 2005-2007. Correlations were performed between the number of eggs collected weekly and weather variables (rainfall, photoperiod, vapor pressure of water, temperature, and relative humidity) with and without time lags (1 to 6 weeks). A stepwise multiple linear regression analysis was performed with the set of meteorological variables from the first year of study with the variables in the time lags that best correlated with the oviposition. Model validation was conducted using the data from the second year of study (October 2006- 2007). Minimum temperature and rainfall were the most important variables. No eggs were found at temperatures below 10°C. The most significant time lags were 3 weeks for minimum temperature and rains, 3 weeks for water vapor pressure, and 6 weeks for maximum temperature. Aedes aegypti could be expected in Orán three weeks after rains with adequate min temperatures. The best-fit forecasting model for the combined meteorological variables explained 70 % of the variance (adj. R2). The correlation between Ae. aegypti oviposition observed and estimated by the forecasting model resulted in rs = 0.80 (P < 0.05). The forecasting model developed would allow prediction of increases and decreases in the Ae. aegypti oviposition activity based on meteorological data for Orán city and, according to the meteorological variables, vector activity can be predicted three or four weeks in advance.

show abstract

Section: Introductionmentioning

confidence: 99%

Weather Variability Associated with Aedes (Stegomyia) aegypti (Dengue Vector) Oviposition Dynamics in Northwestern Argentina

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Dengue disease is found in tropical and subtropical climates, and in the past decade it has extended to temperate regions 1,2 . Vector-borne diseases are sensitive to environmental and climatic changes 3,4 , which could bring on changes in vector distribution and abundance as well as changes in disease incidence rates 5 . In the last 10 years, DENV has undergone a rapid expansion into temperate regions, generating numerous epidemic events 1 .…”

Section: Background and Summarymentioning

confidence: 99%

Dengue emergence in the temperate Argentinian province of Santa Fe, 2009-2020

López

Jordan

Blatter

et al. 2020

Preprint

View full text Add to dashboard Cite

Dengue disease is found in tropical and subtropical climates and within the last decade it has extended to temperate regions. Santa Fe, a temperate province in Argentina, has experienced an increase in dengue cases and virus circulation in the last decade, with the recent 2020 outbreak being the largest since dengue transmission was first reported in the province in 2009. The aim of this work is to perform a description of spatio-temporal fluctuations of dengue (DENV) cases from 2009 to the present in Santa Fe province. The data presented in this work provide a detailed description of dengue virus transmission for Santa Fe province by department. This information is useful to assist in better understanding the impact of ongoing dengue emergence in temperate regions across the world. Indeed, this work provides data useful for future studies including those investigating socio-ecological, climate, and environmental factors associated with dengue transmission, as well as those investigating other variables related to the biology and the ecology of vector-borne diseases.

show abstract

“…Outbreaks occurred in 2013, 2014, and 2015 (8,735 total cases). In 2016, the most important dengue outbreak to date occurred, with 41,233 confirmed autochthonous cases, 2,681 imported cases and 11 deaths nationwide [12]. Imported cases by CHIKV were first reported in 2014, and in 2016, the first autochthonous cases by CHIKV were reported [13].…”

Section: Introductionmentioning

confidence: 99%

A decade of arbovirus emergence in the temperate southern cone of South America: dengue, Aedes aegypti and climate dynamics in Córdoba, Argentina

Estallo

Sippy

Stewart-Ibarra

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Argentina is located at the southern temperate range of arboviral transmission by the mosquito Aedes aegypti and has experienced a rapid increase in disease transmission in recent years. Here we present findings from an entomological surveillance study that began in Cordoba, Argentina, following the emergence of dengue in 2009. Methods: From 2009 to 2017, larval surveys were conducted monthly, from November to May, in 600 randomly selected households distributed across the city. From 2009 to 2013, ovitraps (n=177) were sampled weekly to monitor the oviposition activity of Ae. aegypti. We explored seasonal and interannual dynamics of entomological variables and dengue transmission. Cross correlation analysis was used to identify significant lag periods. Results: Aedes aegypti were detected over the entire study period, and abundance peaked during the summer months (January to March). We identified a considerable increase in the proportion of homes with juvenile Ae. aegypti over the study period (from 5.7% of homes in 2009-10 to 15.4% of homes in 2016-17). Aedes aegypti eggs per ovitrap and larval abundance were positively associated with temperature in the same month. Autochthonous dengue transmission peaked in April, following a peak in imported dengue cases in March; autochthonous dengue was not positively associated with vector or climate variables. Conclusions: This longitudinal study provides insights into the complex dynamics of arbovirus transmission and vector populations in a temperate region of arbovirus emergence. Our findings suggest that Cordoba is well suited for arbovirus disease transmission, given the stable and abundant vector populations. Further studies are needed to better understand the role of regional human movement.

show abstract

Spatio-temporal dynamics of dengue 2009 outbreak in Córdoba City, Argentina

Cited by 39 publications

References 19 publications

Weather Variability Associated with Aedes (Stegomyia) aegypti (Dengue Vector) Oviposition Dynamics in Northwestern Argentina

Weather Variability Associated with Aedes (Stegomyia) aegypti (Dengue Vector) Oviposition Dynamics in Northwestern Argentina

Dengue emergence in the temperate Argentinian province of Santa Fe, 2009-2020

A decade of arbovirus emergence in the temperate southern cone of South America: dengue, Aedes aegypti and climate dynamics in Córdoba, Argentina

Contact Info

Product

Resources

About