Abstract
Limited research exists on the influence of climatic conditions on the risk of hospital admission for asthma in Minas Gerais, Brazil. The objectives of this article are: a) to evaluate the influence of climatic conditions on hospital admissions for asthma and lower respiratory tract infections (LRTIs) among children and adolescents living in Belo Horizonte during the period 2002 to 2012 and identify epidemic peaks of admissions for asthma; b) to compare local seasonal patterns of admissions for asthma and LRTIs. Using hospital admission data stratified by aged group, regression analysis was performed to determine the relationship between the variables. Epidemic peaks were identified using an ARIMA model. There was an increase in admissions for asthma with an increase in relative humidity after rainy periods; admissions for bronchiolitis were associated with low levels of maximum temperature and rainfall. Rainy periods can lead to an increase in indoor and outdoor humidity, facilitating fungal proliferation, while cold periods can lead to an increase in the spread of viruses.
Highlights
Resumo O risco de hospitalização por asma influenciado pelo disparo das condições climáticas é pouco explorado em Minas Gerais
Limited research exists on the influence of climatic conditions on the risk of hospital admission for asthma in Minas Gerais, Brazil
The objectives of this article are: a) to evaluate the influence of climatic conditions on hospital admissions for asthma and lower respiratory tract infections (LRTIs) among children and adolescents living in Belo Horizonte during the period 2002 to 2012 and identify epidemic peaks of admissions for asthma; b) to compare local seasonal patterns of admissions for asthma and LRTIs
Summary
Foi realizado estudo observacional descritivo e de séries temporais, na cidade de Belo Horizonte, Minas Gerais, no período de 2002 a 2012. Belo Horizonte (BH), capital do estado de Minas Gerais, está situada na região Sudeste do Brasil e possui população de 2.375.151 habitantes, área de 331,4 km[2], com densidade populacional de 7.167,02 habitantes/km[2]. Possui altitude média de 900 metros, latitude de 19,9°S e longitude de 43,9°W16. A temperatura média mensal é de 23°C no verão (dezembro a março) e 19°C no inverno (junho a setembro), sendo que durante o inverno ocorre o fenômeno de inversão térmica. A precipitação anual é de cerca de 1.450 mm e a direção predominante de vento é lestenordeste[16]
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