Effects of climatic and social factors on dengue incidence in Mexican municipalities in the state of Veracruz

Moreno-Banda, Grea Litai; Riojas-Rodríguez, Horacio; Hurtado-Díaz, Magali; Danis‐Lozano, Rogelio; Rothenberg, Stephen J.

doi:10.21149/8414

Cited by 11 publications

(9 citation statements)

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“…Clearly, these factors alone are not able explain all observations of seasonality as these are associated with numerous confounding variables, such as population density, population growth, human movement and environmental changes. Nonetheless, there are established associations reported between some tropical infections and weather variables, such as Zika , malaria, leishmaniasis, yellow fever, dengue fever, and West Nile fever 21-23. In these cases, the seasonal variations in transmission may be readily attributed to changes in the insect vector population bearing the viral pathogen.…”

Section: Discussionmentioning

confidence: 99%

Effects of seasonal changes in temperature and humidity on incidence of necrotizing soft tissue infections in Halifax, Canada, 2001-2015

Fadel

Burke

Joukhadar

et al. 2019

SMJ

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Objectives: To explore weather seasonal variation in Necrotizing soft tissue infections (NSTI) in Halifax, Nova Scotia, Canada could be attributed to changes in environmental factors of temperature and humidity specifically. Methods: A retrospective chart review of NSTIs between 2001 and 2015. Regional temperature and humidity data were obtained from the Environment Canada Agency, Halifax, Canada. Chi-square was used for categorical variables and continuous data was used for correlation analyses. Logistic regression was performed to analyze mortality. Results: Of 170 NSTI patients identified, more presented from March to July, especially when the temperature was >10ºC. Higher incidence per 100,000 persons correlated with increased monthly temperatures ( p <0.01). Monthly NSTI incidence was inversely related to mean humidity ( p =0.005). Causative organism was associated with mean weekly temperature ( p <0.01) but not humidity ( p =0.66). Low body mass index, higher American Society of Anesthesiologists class, long intensive care unit stay, and shorter overall hospital stay were associated with mortality. No correlation was identified between temperature and humidity and mortality. Conclusion: This study demonstrates a tendency toward more frequent cases of NSTI with warmer, but less humid weather, without effect on severity or mortality.

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Section: Discussionmentioning

confidence: 99%

Effects of seasonal changes in temperature and humidity on incidence of necrotizing soft tissue infections in Halifax, Canada, 2001-2015

Fadel

Burke

Joukhadar

et al. 2019

SMJ

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“…This topic has been explored in other populations where there is a full understanding [ 23 , 25 ]. This is very important given the ecological, epidemiological, and socioeconomic conditions that characterize Mexico, particularly the State of Veracruz, due to the distribution of vectors and the spread of viruses [ 26 ].…”

Section: Discussionmentioning

confidence: 99%

Knowledge, Attitudes, and Practices about Zika among a University Community Located in an Endemic Zone in Mexico

Argüelles-Nava

Álvarez-Bañuelos

Córdoba-Suárez

et al. 2018

IJERPH

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To assess the knowledge, attitudes, and practices about the Zika virus in both students and workers at the University of Veracruz, an online survey was conducted. The participants were divided into two groups: one according to sex, the other according to whether they were workers or students. Their answers were classified into knowledge, attitudes, and practices and they were rated as low, medium, and high. The results showed that knowledge about Zika prevailing among the university population is considered as medium in 79.4% of the study population. Most respondents know that the mosquito spreads the Zika virus (98.8%) and the clinical characteristics, while sexual transmission by the virus is little known (36.85%). Both the univariate analysis (OR (CI5) 0.227 (0.070–0.735), p = 0.013] and multivariate analysis (OR (CI95) 0.234 (0.071–778), p = 0.018] showed that belonging to the health sciences area is related to having a greater knowledge about Zika. Despite the existing knowledge, a low level of prevention practices prevails in the whole community (55%). A medium level of knowledge about Zika prevailed, while proper implementation of preventive measures for Zika is low, despite the fact that the state of Veracruz—the place where the University is located—is an endemic area.

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“…1,2 These conditions, in a dynamics of seasonal and spatial interactions, influence the vectors' capacity to transmit the viruses. 3,4 Seasonal climate conditions may also introduce variability in mosquito breeding. 2,5 We present herein the results of an analysis of the association of confirmed dengue case incidence and Aedes spp.…”

Section: Introductionmentioning

confidence: 99%

Association of dengue fever with Aedes spp. abundance and climatological effects

Betanzos-Reyes¹,

Rodrı́guez²,

Romero-Martínez³

et al. 2017

Salud Publica Mex

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Objective. To analyze the association of dengue fever incidence with Aedes mosquito's abundance, and the effect of climatological and geographical variables, in a region in Morelos State, Mexico. Materials and methods. Weekly data during the period 2010 to 2014 was used. Mosquito abundance was determined using ovitraps. Confirmed dengue cases were obtained from the Epidemiological Surveillance System. Climatic variables were obtained from weather monitoring stations. The correlation between climate variables and ovitraps data was estimated using a multivariate regression model. Results. A correlation of mosquito abundance with dengue fever incidence, and a yearly pattern with seasonal variations were observed. The daily mean temperature, relative humidity and rainfall parameters were associated with mosquito egg abundance. Time lags of three and four weeks between egg counts and dengue fever incidence were observed. Conclusion. Time lags between egg counts and dengue incidence could be useful for prevention and control interventions.Keywords: dengue fever; Aedes aegypti; ovitrap; climate; ecological epidemiology; Mexico http://doi.org/10.21149/8141Resumen Objetivo. Analizar la asociación de la incidencia de dengue con la abundancia de mosquitos Aedes y el efecto de variables climatológicas, en una región de Morelos, México. Material y métodos. Se utilizaron datos semanales durante el 2010-2014. La abundancia de mosquitos se determinó utilizando ovitraps. Los casos de dengue se obtuvieron del Sistema de Vigilancia Epidemiológica. Las variables climáticas se obtuvieron de estaciones climatológicas locales. La correlación entre las variables climáticas y los datos de ovitrampas se estimó mediante un modelo de regresión multivariado. Resultados. Se observó una correlación de la abundancia de mosquitos con la incidencia de dengue. La temperatura media diaria, humedad relativa y la precipitación pluvial se asociaron con abundancia de mosquitos. Se observó un desfase temporal de tres a cuatro semanas entre cuentas de huevos y la incidencia de dengue. Conclusión. Los intervalos entre las cuentas de huevos y la incidencia de dengue podrían ser utilizados para planear intervenciones de prevención y control.

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Effects of climatic and social factors on dengue incidence in Mexican municipalities in the state of Veracruz

Cited by 11 publications

References 50 publications

Effects of seasonal changes in temperature and humidity on incidence of necrotizing soft tissue infections in Halifax, Canada, 2001-2015

Effects of seasonal changes in temperature and humidity on incidence of necrotizing soft tissue infections in Halifax, Canada, 2001-2015

Knowledge, Attitudes, and Practices about Zika among a University Community Located in an Endemic Zone in Mexico

Association of dengue fever with Aedes spp. abundance and climatological effects

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