Spatiotemporal patterns of dengue and Zika incidence during the 2015-2018 outbreak of Zika in Mexico

Cortes-Escamilla, Anais; Roche, Benjamín; Rodríguez-López, Mario Henry; Gatell-Ramírez, Hugo López; Alpuche-Aranda, Celia

doi:10.21149/13584

Cited by 5 publications

(3 citation statements)

References 38 publications

(61 reference statements)

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“…This is known in Spain, where the virus does not currently circulate, but the regular arrival of infected people from endemic countries presents a constant risk. In addition, multiple studies in Mexico, and globally, include probable or confirmed cases as another study variable [53].…”

Section: Discussionmentioning

confidence: 99%

Identification of Risk Areas of Dengue Transmission in Culiacan, Mexico

Román-Pérez,

Aguirre-Gómez,

Hernández-Ávila

et al. 2023

IJGI

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Dengue is a public health problem in more than 100 countries around the world and in virtually the entire region of the Americas, including Mexico. Mosquitoes of the genus Aedes aegypti transmit dengue; its reproduction requires certain geographical, epidemiological, demographic and socioeconomic conditions. Detailed information on socioeconomic, epidemiological and entomological data is available, but detailed meteorological information is not. The objective of this study was to identify the areas of risk of dengue transmission for each month of the year based on environmental, social, entomological and epidemiological information from 2010 to 2020, in Culiacan, Mexico. LST, NDVI and NDMI were calculated from Landsat 8 satellite images with remote sensing techniques. Additional variables were human population density and overcrowding; mosquito egg density from positive ovitraps; and probable cases of dengue. A descriptive analysis of the study variables and a multiple linear regression analysis were performed to determine the significant variables. In addition, a multicriteria spatial analysis was applied through the AHP technique to identify areas at risk of dengue transmission. The results revealed that the variables NDVI, NDMI and overcrowding were not significant; however, the LST, population density, egg density per positive ovitrap and probable cases were. The highest population in the transmission risk areas was in November, and the highest transmission area was identified in October. In conclusion, it was possible to identify which of the study variables were significant; in addition, monthly maps of risk areas of dengue transmission for Culiacan were obtained. Each geographical area had its own characteristics that influenced, in one way or another, the incidence of dengue, highlighting that the strategies for control of dengue must be specific to each region.

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Section: Discussionmentioning

confidence: 99%

Identification of Risk Areas of Dengue Transmission in Culiacan, Mexico

Román-Pérez,

Aguirre-Gómez,

Hernández-Ávila

et al. 2023

IJGI

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“…In this sense, our research has limitations already pointed out in similar Mexican studies (Dzul-Manzanilla et al, 2021;Cortés-Escamilla et al, 2022). Our analyses were based in registered confirmed cases, which may flaw identifying additional hotspots in local areas with less access to health care interventions for the timely diagnosis of the disease.…”

mentioning

confidence: 85%

Spatial correlation of dengue with socioeconomic status and land temperature in northwest Mexico

Alvarez-Hernandez,

Yera-Grillo,

Robles-Morúa

et al. 2023

BIOTECNIA

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Objective. To characterize the geographic distribution of dengue and to evaluate the spatial autocorrelation with social and climatic determinants at the census-tract level in two medium sized cities in northwestern Mexico. Methods. In this work we apply spatial analysis ecological tools, such as the Moran’s Index and the Local Indicator of Spatial Association (LISA) method, to examine global and local spatial correlation between incidence of dengue, and socioeconomic and climatic factors at the census tract-level. For the analysis of the spatial clustering, the Getis-Ord method was used to find statistically significant hot spots in each city. Results. Overall, a global spatial autocorrelation could not be identified, although local clusters of a high dengue incidence, soil surface temperature ≤ 31 °C and high degree of social marginalization coincide. Discussion. We found that at the census-tract level in urban settings, socially disadvantaged populations showed higher clusters of dengue when compared to areas with better socioeconomic conditions. In the two study sites, a similar spatial pattern was observed when considering public health conditions and its aggregation with physical attributes using spatial analysis techniques, supporting the application of this technique for a better understanding about the dengue distribution in urban areas.

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“…Subsequent studies showed that ZIKV is an arbovirus of the genus Flavivirus, whose main vector is the Aedes aegypti mosquito 1 . Since then, cases of ZIKV infections in humans with diverse clinical manifestations have been reported; over time, cases with more severe alterations have appeared 5,15,22 .…”

Section: Zikvmentioning

confidence: 99%

Congenital Zika syndrome

Crisanto-López¹,

Jesús²,

López-Quecho³

et al. 2023

BMHIM

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In February 2016, the World Health Organization declared Zika virus (ZIKV) infection a public health emergency of international concern because it caused congenital Zika syndrome (CZS). The CZS is considered a specific pattern of birth defects caused by ZIKV infection, which is transmitted by the bite of the Aedes aegypti mosquito. The CZS clinical manifestations are broad and nonspecific, including microcephaly, subcortical calcifications, ocular alterations, congenital contractures, early hypertonia, and pyramidal as well as extrapyramidal symptoms. The ZIKV has gained great importance because it has affected a large percentage of the population worldwide during the last few years, despite the measures implemented by international organizations. The pathophysiology and non-vectorial transmission routes of the virus are still under study. The diagnosis is made upon suspicion of ZIKV infection, the patient's clinical manifestations, and it is confirmed by molecular laboratory tests demonstrating the presence of viral particles. Unfortunately, there is no specific treatment or vaccine for this condition; however, patients receive multidisciplinary care and constant monitoring. Therefore, the strategies that have been implemented are directed toward preventive measures and vector control.

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Spatiotemporal patterns of dengue and Zika incidence during the 2015-2018 outbreak of Zika in Mexico

Cited by 5 publications

References 38 publications

Identification of Risk Areas of Dengue Transmission in Culiacan, Mexico

Identification of Risk Areas of Dengue Transmission in Culiacan, Mexico

Spatial correlation of dengue with socioeconomic status and land temperature in northwest Mexico

Congenital Zika syndrome

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