Temporal trends and climatic factors associated with bacterial enteric diseases in Vietnam, 1991-2001

Environmental Health Perspectives
Louise A Kelly-HopeMark A Miller

Abstract

In Vietnam, shigellosis/dysentery, typhoid fever, and cholera are important enteric diseases. To better understand their epidemiology, we determined temporal trends, seasonal patterns, and climatic factors associated with high risk periods in eight regions across Vietnam. We quantified monthly cases and incidence rates (IR) for each region from national surveillance data (1991-2001). High- and low-disease periods were defined from the highest and lowest IRs (1 SD above and below the mean) and from outbreaks from positive outliers (4 SDs higher in 1 month or 2 SDs higher in > or = 2 consecutive months). We used general linear models to compare precipitation, temperature, and humidity between high- and low-risk periods. Shigellosis/dysentery was widespread and increased 2.5 times during the study period, with the highest average IRs found between June and August (2.1/100,000-26.2/100,000). Typhoid fever was endemic in the Mekong River Delta and emerged in the Northwest in the mid-1990s, with peaks between April and August (0.38-8.6). Cholera was mostly epidemic along the central coast between May and November (0.07-2.7), and then decreased dramatically nationwide from 1997 onward. Significant climate differences were found only b...Continue Reading

References

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Citations

Apr 15, 2011·Epidemiology and Infection·W J AlonsoB J J McCormick
Sep 20, 2011·Epidemiology and Infection·B J J McCormickM A Miller
Feb 2, 2011·PLoS Neglected Tropical Diseases·Dang Duc AnhJohn D Clemens
Sep 3, 2014·PLoS Medicine·Dang Duc AnhDavid A Sack
Mar 12, 2013·International Journal of Infectious Diseases : IJID : Official Publication of the International Society for Infectious Diseases·Ehsan MostafaviAliakbar Haghdoost
Feb 13, 2016·Scientific Reports·Alexandra V KulinkinaElena N Naumova
Oct 30, 2013·The American Journal of Tropical Medicine and Hygiene·Ehsan MostafaviSadegh Chinikar
Dec 26, 2016·The Science of the Total Environment·Dung PhungCunrui Huang
Jan 8, 2015·Asia-Pacific Journal of Public Health·Dung PhungMinh Nguyen
Dec 30, 2017·International Journal of Environmental Research and Public Health·Chengdong XuJinjun Liang
Dec 5, 2014·International Journal of Biometeorology·Dung PhungTrung Hieu Nguyen
Aug 24, 2019·Medicine·Chian-Ching ChenKow-Tong Chen
Dec 24, 2011·International Journal of Microbiology·A K Goel, S C Jiang
Jul 25, 2017·BMC Infectious Diseases·Kinley Wangdi, Archie Ca Clements
May 8, 2019·Epidemiology and Infection·Asish K MukhopadhyayShanta Dutta
Oct 13, 2018·International Journal of Environmental Research and Public Health·Yeong-Jun SongJiseun Lim
May 25, 2012·Spatial and Spatio-temporal Epidemiology·S LeykJ R Nuckols

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