Imported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.

<h4>Background</h4>Dengue fever (DF) outbreaks often arise from imported DF cases in Cairns, Australia. Few studies have incorporated imported DF cases in the estimation of the relationship between weather variability and incidence of autochthonous DF. The study aimed to examine the impa...

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Autores principales: Xiaodong Huang, Gail Williams, Archie C A Clements, Wenbiao Hu
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Publicado: Public Library of Science (PLoS) 2013
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spelling oai:doaj.org-article:28fffe1031c64cfa823c68f0c81eef7f2021-11-18T08:42:05ZImported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.1932-620310.1371/journal.pone.0081887https://doaj.org/article/28fffe1031c64cfa823c68f0c81eef7f2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24349148/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Dengue fever (DF) outbreaks often arise from imported DF cases in Cairns, Australia. Few studies have incorporated imported DF cases in the estimation of the relationship between weather variability and incidence of autochthonous DF. The study aimed to examine the impact of weather variability on autochthonous DF infection after accounting for imported DF cases and then to explore the possibility of developing an empirical forecast system.<h4>Methodology/principal finds</h4>Data on weather variables, notified DF cases (including those acquired locally and overseas), and population size in Cairns were supplied by the Australian Bureau of Meteorology, Queensland Health, and Australian Bureau of Statistics. A time-series negative-binomial hurdle model was used to assess the effects of imported DF cases and weather variability on autochthonous DF incidence. Our results showed that monthly autochthonous DF incidences were significantly associated with monthly imported DF cases (Relative Risk (RR):1.52; 95% confidence interval (CI): 1.01-2.28), monthly minimum temperature ((o)C) (RR: 2.28; 95% CI: 1.77-2.93), monthly relative humidity (%) (RR: 1.21; 95% CI: 1.06-1.37), monthly rainfall (mm) (RR: 0.50; 95% CI: 0.31-0.81) and monthly standard deviation of daily relative humidity (%) (RR: 1.27; 95% CI: 1.08-1.50). In the zero hurdle component, the occurrence of monthly autochthonous DF cases was significantly associated with monthly minimum temperature (Odds Ratio (OR): 1.64; 95% CI: 1.01-2.67).<h4>Conclusions/significance</h4>Our research suggested that incidences of monthly autochthonous DF were strongly positively associated with monthly imported DF cases, local minimum temperature and inter-month relative humidity variability in Cairns. Moreover, DF outbreak in Cairns was driven by imported DF cases only under favourable seasons and weather conditions in the study.Xiaodong HuangGail WilliamsArchie C A ClementsWenbiao HuPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e81887 (2013)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Xiaodong Huang
Gail Williams
Archie C A Clements
Wenbiao Hu
Imported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.
description <h4>Background</h4>Dengue fever (DF) outbreaks often arise from imported DF cases in Cairns, Australia. Few studies have incorporated imported DF cases in the estimation of the relationship between weather variability and incidence of autochthonous DF. The study aimed to examine the impact of weather variability on autochthonous DF infection after accounting for imported DF cases and then to explore the possibility of developing an empirical forecast system.<h4>Methodology/principal finds</h4>Data on weather variables, notified DF cases (including those acquired locally and overseas), and population size in Cairns were supplied by the Australian Bureau of Meteorology, Queensland Health, and Australian Bureau of Statistics. A time-series negative-binomial hurdle model was used to assess the effects of imported DF cases and weather variability on autochthonous DF incidence. Our results showed that monthly autochthonous DF incidences were significantly associated with monthly imported DF cases (Relative Risk (RR):1.52; 95% confidence interval (CI): 1.01-2.28), monthly minimum temperature ((o)C) (RR: 2.28; 95% CI: 1.77-2.93), monthly relative humidity (%) (RR: 1.21; 95% CI: 1.06-1.37), monthly rainfall (mm) (RR: 0.50; 95% CI: 0.31-0.81) and monthly standard deviation of daily relative humidity (%) (RR: 1.27; 95% CI: 1.08-1.50). In the zero hurdle component, the occurrence of monthly autochthonous DF cases was significantly associated with monthly minimum temperature (Odds Ratio (OR): 1.64; 95% CI: 1.01-2.67).<h4>Conclusions/significance</h4>Our research suggested that incidences of monthly autochthonous DF were strongly positively associated with monthly imported DF cases, local minimum temperature and inter-month relative humidity variability in Cairns. Moreover, DF outbreak in Cairns was driven by imported DF cases only under favourable seasons and weather conditions in the study.
format article
author Xiaodong Huang
Gail Williams
Archie C A Clements
Wenbiao Hu
author_facet Xiaodong Huang
Gail Williams
Archie C A Clements
Wenbiao Hu
author_sort Xiaodong Huang
title Imported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.
title_short Imported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.
title_full Imported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.
title_fullStr Imported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.
title_full_unstemmed Imported dengue cases, weather variation and autochthonous dengue incidence in Cairns, Australia.
title_sort imported dengue cases, weather variation and autochthonous dengue incidence in cairns, australia.
publisher Public Library of Science (PLoS)
publishDate 2013
url https://doaj.org/article/28fffe1031c64cfa823c68f0c81eef7f
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AT gailwilliams importeddenguecasesweathervariationandautochthonousdengueincidenceincairnsaustralia
AT archiecaclements importeddenguecasesweathervariationandautochthonousdengueincidenceincairnsaustralia
AT wenbiaohu importeddenguecasesweathervariationandautochthonousdengueincidenceincairnsaustralia
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