Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study
Background: While floods can potentially increase the transmission of dengue, only few studies have reported the association of dengue epidemics with flooding. We estimated the effects of river levels and rainfall on the hospital admissions for dengue fever at 11 major hospitals in Dhaka, Bangladesh...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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BioMed Central
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/19619 |
| _version_ | 1848750083135242240 |
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| author | Hashizume, M. Dewan, Ashraf Sunahara, T. Rahman, M. Yamamoto, T. |
| author_facet | Hashizume, M. Dewan, Ashraf Sunahara, T. Rahman, M. Yamamoto, T. |
| author_sort | Hashizume, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Background: While floods can potentially increase the transmission of dengue, only few studies have reported the association of dengue epidemics with flooding. We estimated the effects of river levels and rainfall on the hospital admissions for dengue fever at 11 major hospitals in Dhaka, Bangladesh. Methods: We examined time-series of the number of hospital admissions of dengue fever in relation to river levels from 2005 to 2009 using generalized linear Poisson regression models adjusting for seasonal, between-year variation, public holidays and temperature. Results: There was strong evidence for an increase in dengue fever at high river levels. Hospitalisations increased by 6.9% (95% CI: 3.2, 10.7) for each 0.1 metre increase above a threshold (3.9 metres) for the average river level over lags of 0–5 weeks. Conversely, the number of hospitalisations increased by 29.6% (95% CI: 19.8, 40.2) for a 0.1 metre decrease below the same threshold of the average river level over lags of 0–19 weeks. Conclusions: Our findings provide evidence that factors associated with both high and low river levels increase the hospitalisations of dengue fever cases in Dhaka. |
| first_indexed | 2025-11-14T07:31:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-19619 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:31:11Z |
| publishDate | 2012 |
| publisher | BioMed Central |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-196192017-09-13T16:04:39Z Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study Hashizume, M. Dewan, Ashraf Sunahara, T. Rahman, M. Yamamoto, T. Time-series Dengue Climate River level Bangladesh Background: While floods can potentially increase the transmission of dengue, only few studies have reported the association of dengue epidemics with flooding. We estimated the effects of river levels and rainfall on the hospital admissions for dengue fever at 11 major hospitals in Dhaka, Bangladesh. Methods: We examined time-series of the number of hospital admissions of dengue fever in relation to river levels from 2005 to 2009 using generalized linear Poisson regression models adjusting for seasonal, between-year variation, public holidays and temperature. Results: There was strong evidence for an increase in dengue fever at high river levels. Hospitalisations increased by 6.9% (95% CI: 3.2, 10.7) for each 0.1 metre increase above a threshold (3.9 metres) for the average river level over lags of 0–5 weeks. Conversely, the number of hospitalisations increased by 29.6% (95% CI: 19.8, 40.2) for a 0.1 metre decrease below the same threshold of the average river level over lags of 0–19 weeks. Conclusions: Our findings provide evidence that factors associated with both high and low river levels increase the hospitalisations of dengue fever cases in Dhaka. 2012 Journal Article http://hdl.handle.net/20.500.11937/19619 10.1186/1471-2334-12-98 BioMed Central fulltext |
| spellingShingle | Time-series Dengue Climate River level Bangladesh Hashizume, M. Dewan, Ashraf Sunahara, T. Rahman, M. Yamamoto, T. Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study |
| title | Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study |
| title_full | Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study |
| title_fullStr | Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study |
| title_full_unstemmed | Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study |
| title_short | Hydroclimatological variability and dengue transmission in Dhaka, Bangladesh: a time-series study |
| title_sort | hydroclimatological variability and dengue transmission in dhaka, bangladesh: a time-series study |
| topic | Time-series Dengue Climate River level Bangladesh |
| url | http://hdl.handle.net/20.500.11937/19619 |