Using satellite data to study the relationship between rainfall and diarrheal diseases in a Southwestern Amazon basin

Abstract

The North region is the second region in Brazil with the highest incidence rate of diarrheal diseases in children under 5 years old. The aim of this study was to investigate the relationship between rainfall and water level during the rainy season principally with the incidence rate of this disease in a southwestern Amazon basin. Rainfall estimates and the water level were correlated and both of them were correlated with the diarrheal incidence rate. For the Alto Acre region, 2 to 3 days’ time-lag is the best interval to observe the impact of the rainfall in the water level (R = 0.35). In the Lower Acre region this time-lag increased (4 days) with a reduction in the correlation value was found. The correlation between rainfall and diarrheal disease was better in the Lower Acre region (Acrelândia, R = 0.7) and rainfall upstream of the city. Between water level and diarrheal disease, the best results were found for the Brasiléia gauging station (Brasiléia, R = 0.3; Epitaciolândia, R = 0.5). This study’s results may support planning and financial resources allocation to prioritize actions for local Civil Defense and health care services before, during and after the rainy season.

On the opposite relation between extreme precipitation over west Amazon and southeastern Brazil: observations and model simulations

“…A pilot project was applied to Acre state, in western Brazilian Amazonia, where the visualization tools of such data enabled, in a series of stakeholder consultation workshops, the identification of necessary climate interface analysis to provide inputs for policy‐making. That was particularly the case of two climate‐health analysis, one on temperature and occurrence of dengue fever (Horta et al , ) and another on precipitation, flooding and infant diarrhoea outbreaks (Fonseca et al , ).…”

Variabilidade climática e internações por doenças diarreicas infecciosas em um município da Amazônia Ocidental brasileira

“…This variable is an indicator for the prediction of trends in the occurrence of this disease in this municipality and in the other municipalities of the Amazon region, as they share similar climatic and environmental features 28 . Graph 3 shows the time series of these variables during the study period.…”

“…Graph 3 shows the time series of these variables during the study period. Outbreaks of diarrhea associated with extreme weather events have occurred worldwide, especially after flooding events and inundations 9,28,[36][37][38][39][40][41] . However, until then, no one knew how much these factors could contribute to the occurrence of infectious diarrheal diseases in this municipality with potential to cause hospitalization.…”

“…The capital also has high percentage of indigenous population living in rural areas and with less access to these services 2,6,26,27 . It is important to emphasize that the North is the second poorest region of the country and has one of the highest incidence rates of diarrheal diseases in children under 5 years of age, after the Northeast 28 .…”

Influência da variabilidade climática e das alterações ambientais na ocorrência de doenças sensíveis ao clima em uma capital da Amazônia Ocidental brasileira

“…As doenças diarreicas infecciosas são doenças agudas, causadas por agentes etiológicos que incluem bactérias, vírus, parasitas e suas toxinas, como é o caso da cólera, da shiguelose, da amebíase e da febre tifoide e paratifoide, entre outras. As manifestações clínicas são bastante variadas e vão desde infecções assintomáticas até casos graves com diarreia profusa FONSECA et al, 2016).…”