reference : Impact of El Niño Southern Oscillation on infectious disease hospitalization risk in the United States

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Bibliographic fields
reftype Journal Article
Abstract Although the global climate is changing at an unprecedented rate, links between weather and infectious disease have received little attention in high income countries. The “El Niño Southern Oscillation” (ENSO) occurs irregularly and is associated with changing temperature and precipitation patterns. We studied the impact of ENSO on infectious diseases in four census regions in the United States. We evaluated infectious diseases requiring hospitalization using the US National Hospital Discharge Survey (1970–2010) and five disease groupings that may undergo epidemiological shifts with changing climate: (i) vector-borne diseases, (ii) pneumonia and influenza, (iii) enteric disease, (iv) zoonotic bacterial disease, and (v) fungal disease. ENSO exposure was based on the Multivariate ENSO Index. Distributed lag models, with adjustment for seasonal oscillation and long-term trends, were used to evaluate the impact of ENSO on disease incidence over lags of up to 12 mo. ENSO was associated more with vector-borne disease [relative risk (RR) 2.96, 95% confidence interval (CI) 1.03–8.48] and less with enteric disease (0.73, 95% CI 0.62–0.87) in the Western region; the increase in vector-borne disease was attributable to increased risk of rickettsioses and tick-borne infectious diseases. By contrast, ENSO was associated with more enteric disease in non-Western regions (RR 1.12, 95% CI 1.02–1.15). The periodic nature of ENSO may make it a useful natural experiment for evaluation of the impact of climatic shifts on infectious disease risk. The impact of ENSO suggests that warmer temperatures and extreme variation in precipitation events influence risks of vector-borne and enteric disease in the United States.
Author Fisman, David N.; Tuite, Ashleigh R.; Brown, Kevin A.
DOI 10.1073/pnas.1604980113
Date December 20, 2016
Issue 51
Journal Proceedings of the National Academy of Sciences of the United States of America
Pages 14589-14594
Title Impact of El Niño Southern Oscillation on infectious disease hospitalization risk in the United States
Volume 113
Year 2016
Bibliographic identifiers
_record_number 24127
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