Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil
Understanding the relations between rainfall and river water levels and malaria cases can provide important clues on modulation of the disease in the context of local climatic variability. In order to demonstrate how these relations can vary in the same endemic space, a coherence and wavelet phase a...
| Autor principal: | Wolfarth-Couto, Bruna |
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| Outros Autores: | Silva, Rosimeire Araújo da, Filizola, Naziano Pantoja |
| Grau: | Artigo |
| Idioma: | pt_BR |
| Publicado em: |
Cadernos de Saúde Pública
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/15554 |
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oai:repositorio:1-15554 |
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oai:repositorio:1-15554 Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil Variabilidade dos casos de malária e sua relação com a precipitação e nível d’água dos rios no estado do Amazonas, Brasil] Wolfarth-Couto, Bruna Silva, Rosimeire Araújo da Filizola, Naziano Pantoja Rain Animals Brasil Climate Demography Disease Carrier Human Hydrology Incidence Malaria River Season Animal Brasil Climate Disease Vectors Humans Hydrology Incidence Malaria Rain Residence Characteristics Rivers Seasons Understanding the relations between rainfall and river water levels and malaria cases can provide important clues on modulation of the disease in the context of local climatic variability. In order to demonstrate how these relations can vary in the same endemic space, a coherence and wavelet phase analysis was performed between environmental and epidemiological variables from 2003 to 2010 for 8 municipalities (counties) in the state of Amazonas, Brazil (Barcelos, Borba, Canutama, Carauari, Coari, Eirunepé, Humaitá, and São Gabriel da Cachoeira). The results suggest significant coherences, mainly on the scale of annual variability, but scales of less than 1 year and of 2 years were also found. The analyses show that malaria cases display a peak at approximately 1 and a half months before or after peak rainfall and on average 1-4 months after peak river water levels in most of the municipalities studied. Each environmental variable displayed distinct local behavior in time and in space, suggesting that other local variables (e.g. topography) may control environmental conditions, favoring different patterns in each municipality. However, when the analyses were performed jointly it was possible to show a non-random order in these relations. Although environmental and climatic factors indicate a certain influence on malaria dynamics, surveillance, prevention, and control issues should not be overlooked, meaning that government public health interventions can mask possible relations with local hydrological and climatic conditions. © 2019, Fundacao Oswaldo Cruz. All rights reserved. 2020-05-14T23:21:43Z 2020-05-14T23:21:43Z 2019 Artigo https://repositorio.inpa.gov.br/handle/1/15554 10.1590/0102-311x00020218 pt_BR Volume 35, Número 2 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Cadernos de Saúde Pública |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
pt_BR |
| topic |
Rain Animals Brasil Climate Demography Disease Carrier Human Hydrology Incidence Malaria River Season Animal Brasil Climate Disease Vectors Humans Hydrology Incidence Malaria Rain Residence Characteristics Rivers Seasons |
| spellingShingle |
Rain Animals Brasil Climate Demography Disease Carrier Human Hydrology Incidence Malaria River Season Animal Brasil Climate Disease Vectors Humans Hydrology Incidence Malaria Rain Residence Characteristics Rivers Seasons Wolfarth-Couto, Bruna Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil |
| topic_facet |
Rain Animals Brasil Climate Demography Disease Carrier Human Hydrology Incidence Malaria River Season Animal Brasil Climate Disease Vectors Humans Hydrology Incidence Malaria Rain Residence Characteristics Rivers Seasons |
| description |
Understanding the relations between rainfall and river water levels and malaria cases can provide important clues on modulation of the disease in the context of local climatic variability. In order to demonstrate how these relations can vary in the same endemic space, a coherence and wavelet phase analysis was performed between environmental and epidemiological variables from 2003 to 2010 for 8 municipalities (counties) in the state of Amazonas, Brazil (Barcelos, Borba, Canutama, Carauari, Coari, Eirunepé, Humaitá, and São Gabriel da Cachoeira). The results suggest significant coherences, mainly on the scale of annual variability, but scales of less than 1 year and of 2 years were also found. The analyses show that malaria cases display a peak at approximately 1 and a half months before or after peak rainfall and on average 1-4 months after peak river water levels in most of the municipalities studied. Each environmental variable displayed distinct local behavior in time and in space, suggesting that other local variables (e.g. topography) may control environmental conditions, favoring different patterns in each municipality. However, when the analyses were performed jointly it was possible to show a non-random order in these relations. Although environmental and climatic factors indicate a certain influence on malaria dynamics, surveillance, prevention, and control issues should not be overlooked, meaning that government public health interventions can mask possible relations with local hydrological and climatic conditions. © 2019, Fundacao Oswaldo Cruz. All rights reserved. |
| format |
Artigo |
| author |
Wolfarth-Couto, Bruna |
| author2 |
Silva, Rosimeire Araújo da Filizola, Naziano Pantoja |
| author2Str |
Silva, Rosimeire Araújo da Filizola, Naziano Pantoja |
| title |
Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil |
| title_short |
Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil |
| title_full |
Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil |
| title_fullStr |
Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil |
| title_full_unstemmed |
Variability in malaria cases and the association with rainfall and rivers water levels in Amazonas State, Brazil |
| title_sort |
variability in malaria cases and the association with rainfall and rivers water levels in amazonas state, brazil |
| publisher |
Cadernos de Saúde Pública |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/15554 |
| _version_ |
1787143544970936320 |
| score |
11.653393 |