The changing relationship between Cholera and interannual climate variables in Kolkata over the past century

被引:0
作者
Shackleton, Debbie [1 ]
Memon, Fayyaz Ali [1 ]
Chen, Albert [1 ]
Dutta, Shanta [2 ]
Kanungo, Suman [2 ]
Deb, Alok [2 ]
机构
[1] Univ Exeter, Ctr Water Syst, Dept Engn, Exeter EX4 4QF, Devon, England
[2] Natl Inst Cholera & Enter Dis, Kolkata, India
关键词
Wavelet Analysis; Cholera; ENSO; IOD; Climate; INDIAN-OCEAN DIPOLE; VIBRIO-CHOLERAE; EL-NINO; ENDEMIC CHOLERA; BANGLADESH; RAINFALL; ENSO; TEMPERATURE; BRAHMAPUTRA; SALINITY;
D O I
10.1186/s13099-023-00565-w
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
BackgroundIn the Bengal Delta, research has shown that climate and cholera are linked. One demonstration of this is the relationship between interannual ocean-atmospheric oscillations such as the El Nino Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD). What remains unclear in the present literature is the nature of this relationship in the specific context of Kolkata, and how this relationship may have changed over time.ResultsIn this study, we analyse the changing relationship between ENSO and IOD with cholera in Kolkata over recent (1999-2019) and historical (1897-1941) time intervals. Wavelet coherence analysis revealed significant non-stationary association at 2-4 year and 4-8 year periods between cholera and both interannual timeseries during both time intervals. However, coherence was notably weakened in the recent interval, particularly with regards to ENSO, a result supported by a complementary SARIMA analysis. Similar coherence patterns with temperature indicate it could be an important mediating factor in the relationship between cholera and oscillating climate phenomena in Kolkata.ConclusionsThis study reveals a shifting relationship between cholera and climate variables (ENSO and IOD) in Kolkata, suggesting a decoupling between environmental influences and cholera transmission in recent years. Our results therefore do not suggest that an intensification of ENSO is likely to significantly influence cholera in the region. We also find that the relationship between cholera and interannual climate variables is distinct to Kolkata, highlighting the spatial heterogeneity of the climate-cholera relationship even within the Bengal Delta.
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页数:12
相关论文
共 59 条
[51]   ATTACHMENT OF VIBRIO-CHOLERAE SEROGROUP-O1 TO ZOOPLANKTON AND PHYTOPLANKTON OF BANGLADESH WATERS [J].
TAMPLIN, ML ;
GAUZENS, AL ;
HUQ, A ;
SACK, DA ;
COLWELL, RR .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1990, 56 (06) :1977-1980
[52]  
Torrence C, 1998, B AM METEOROL SOC, V79, P61, DOI 10.1175/1520-0477(1998)079<0061:APGTWA>2.0.CO
[53]  
2
[54]  
Trenberth KE, 2001, J CLIMATE, V14, P1697, DOI 10.1175/1520-0442(2001)014<1697:LIOENO>2.0.CO
[55]  
2
[56]   Impacts of climate modes on temperature extremes over Bangladesh using statistical methods [J].
Uddin, Md Jalal ;
Wahiduzzaman, Md ;
Islam, Abu Reza Md Towfiqul ;
Eibek, Kutub Uddin ;
Nasrin, Zahan Most .
METEOROLOGY AND ATMOSPHERIC PHYSICS, 2022, 134 (02)
[57]   A statistical analysis on the contribution of El Nino-Southern Oscillation to the rainfall and temperature over Bangladesh [J].
Wahiduzzaman, Md ;
Luo, Jing-Jia .
METEOROLOGY AND ATMOSPHERIC PHYSICS, 2021, 133 (01) :55-68
[58]  
Whitehead PG, 2015, ENVIRON SCI-PROC IMP, V17, P1057, DOI [10.1039/c4em00619d, 10.1039/C4EM00619D]
[59]   Influences of heatwave, rainfall, and tree cover on cholera in Bangladesh [J].
Wu, Jianyong ;
Yunus, Mohammad ;
Ali, Mohammad ;
Escamilla, Veronica ;
Emch, Michael .
ENVIRONMENT INTERNATIONAL, 2018, 120 :304-311