Hydrological Scenarios and Malaria Incidence in the Amazonian Context
In Brazil, approximately 99% of malaria cases are concentrated in the Amazon region. An acute febrile infectious disease, malaria is closely related to climatic and hydrological factors. Environmental variables such as rainfall, flow, level, and color of rivers, the latter associated with the suspen...
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| Veröffentlicht in: | Water (Basel) 2022-04, Vol.14 (8), p.1283 |
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| creator | Fonseca, Fernanda Worfarth-Couto, Bruna Santos, Andre Marinho, Rogério Martinez, Jean-Michel Filizola, Naziano |
| description | In Brazil, approximately 99% of malaria cases are concentrated in the Amazon region. An acute febrile infectious disease, malaria is closely related to climatic and hydrological factors. Environmental variables such as rainfall, flow, level, and color of rivers, the latter associated with the suspended sediment concentration, are important factors that can affect the dynamics of the incidence of some infectious diseases, including malaria. This study explores the possibility that malaria incidence is influenced by precipitation, fluctuations in river levels, and suspended sediment concentration. The four studied municipalities are located in two Brazilian states (Amazonas and Pará) on the banks of rivers with different hydrological characteristics. The results suggest that precipitation and river level fluctuations modulate the seasonal pattern of the disease and evidence the existence of delayed effects of river floods on malaria incidence. The seasonality of the disease has a different influence in each municipality studied. However, municipalities close to rivers with the same characteristic color of waters (as a function of the concentration of suspended sediments) have similar responses to the disease. |
| doi_str_mv | 10.3390/w14081283 |
| format | Article |
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An acute febrile infectious disease, malaria is closely related to climatic and hydrological factors. Environmental variables such as rainfall, flow, level, and color of rivers, the latter associated with the suspended sediment concentration, are important factors that can affect the dynamics of the incidence of some infectious diseases, including malaria. This study explores the possibility that malaria incidence is influenced by precipitation, fluctuations in river levels, and suspended sediment concentration. The four studied municipalities are located in two Brazilian states (Amazonas and Pará) on the banks of rivers with different hydrological characteristics. The results suggest that precipitation and river level fluctuations modulate the seasonal pattern of the disease and evidence the existence of delayed effects of river floods on malaria incidence. The seasonality of the disease has a different influence in each municipality studied. However, municipalities close to rivers with the same characteristic color of waters (as a function of the concentration of suspended sediments) have similar responses to the disease.</description><identifier>ISSN: 2073-4441</identifier><identifier>EISSN: 2073-4441</identifier><identifier>DOI: 10.3390/w14081283</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Communicable diseases ; Epidemiology ; Fluctuations ; Fluvial sediments ; Hydrology ; Infectious diseases ; Malaria ; Medical research ; Medicine, Experimental ; Municipalities ; Precipitation ; Rain and rainfall ; Rainfall ; River banks ; Rivers ; Satellites ; Seasonal variations ; Sediment concentration ; Sediment transport ; Sediment, Suspended ; Sediments ; Suspended sediments ; Vector-borne diseases</subject><ispartof>Water (Basel), 2022-04, Vol.14 (8), p.1283</ispartof><rights>COPYRIGHT 2022 MDPI AG</rights><rights>2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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| subjects | Communicable diseases Epidemiology Fluctuations Fluvial sediments Hydrology Infectious diseases Malaria Medical research Medicine, Experimental Municipalities Precipitation Rain and rainfall Rainfall River banks Rivers Satellites Seasonal variations Sediment concentration Sediment transport Sediment, Suspended Sediments Suspended sediments Vector-borne diseases |
| title | Hydrological Scenarios and Malaria Incidence in the Amazonian Context |
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