Local environmental predictors of cholera in Bangladesh and Vietnam.

Environmental factors have been shown to be related to cholera and thus might prove useful for prediction. In Bangladesh and Vietnam, temporal cholera distributions are related to satellite-derived and in-situ environmental time series data in order to examine the relationships between cholera and the local environment. Ordered probit models examine associations in Bangladesh; probit models examine associations at 2 sites in Vietnam. Increases in ocean chlorophyll concentration are related to an increased magnitude of cholera in Bangladesh. Increases in sea surface temperature are most influential in Hue, Vietnam, whereas increases in river height have a significant role in Nha Trang, Vietnam. Cholera appearance and epidemic magnitude are related to the local environment. Local environmental parameters have consistent effects when cholera is regular and more prevalent in endemic settings, but in situations where cholera epidemics are rare there are differential environmental effects.

[1]  M. Shahidullah,et al.  Role of water and sanitation in the incidence of cholera in refugee camps. , 1982, Transactions of the Royal Society of Tropical Medicine and Hygiene.

[2]  M. S. Islam,et al.  The aquatic environment as a reservoir of Vibrio cholerae: a review. , 1993, Journal of diarrhoeal diseases research.

[3]  T. Nielsen,et al.  Regulation of zooplankton biomass and production in a temperate, coastal ecosystem. 2. Ciliates , 1994 .

[4]  R. Colwell,et al.  A simple filtration method to remove plankton-associated Vibrio cholerae in raw water supplies in developing countries , 1996, Applied and environmental microbiology.

[5]  Ira M Longini,et al.  Epidemic and endemic cholera trends over a 33-year period in Bangladesh. , 2002, The Journal of infectious diseases.

[6]  B. Drasar,et al.  CHOLERA AND ESTUARINE SALINITY IN CALCUTTA AND LONDON , 1982, The Lancet.

[7]  M. S. Islam,et al.  Isolation of Vibrio cholerae 0139 Bengal from water In Bangladesh , 1993, The Lancet.

[8]  R. Colwell,et al.  Environmental Reservoir of Vibrio cholerae The Causative Agent of Cholera a , 1994, Annals of the New York Academy of Sciences.

[9]  S. Faruque,et al.  Epidemiology, Genetics, and Ecology of ToxigenicVibrio cholerae , 1998, Microbiology and Molecular Biology Reviews.

[10]  Mercedes Pascual,et al.  Disentangling Extrinsic from Intrinsic Factors in Disease Dynamics: A Nonlinear Time Series Approach with an Application to Cholera , 2004, The American Naturalist.

[11]  Rita R. Colwell,et al.  Effects of Global Climate on Infectious Disease: the Cholera Model , 2002, Clinical Microbiology Reviews.

[12]  Iftekhar Bin Naser,et al.  Seasonal epidemics of cholera inversely correlate with the prevalence of environmental cholera phages. , 2005, Proceedings of the National Academy of Sciences of the United States of America.

[13]  C. Ai,et al.  Interaction terms in logit and probit models , 2003 .

[14]  R. Colwell,et al.  Virulence Genes in Environmental Strains ofVibrio cholerae , 2000, Applied and Environmental Microbiology.

[15]  A. Huq,et al.  Vibrios in the marine and estuarine environments , 1995 .

[16]  J. Clemens,et al.  Feasibility of a mass vaccination campaign using a two-dose oral cholera vaccine in an urban cholera-endemic setting in Mozambique. , 2006, Vaccine.

[17]  D. Sack,et al.  Relationship between neighbourhood-level killed oral cholera vaccine coverage and protective efficacy: evidence for herd immunity. , 2006, International journal of epidemiology.

[18]  M. S. Islam,et al.  Probable role of blue-green algae in maintaining endemicity and seasonality of cholera in Bangladesh: a hypothesis. , 1994, Journal of diarrhoeal diseases research.

[19]  D. Nalin.  CHOLERA, COPEPODS, AND CHITINASE , 1976, The Lancet.

[20]  R. Colwell,et al.  Variation of Toxigenic Vibrio cholerae O1 in the Aquatic Environment of Bangladesh and Its Correlation with the Clinical Strains , 2004, Microbiology and immunology.

[21]  L. Cisneros,et al.  Adsorption and growth of Vibrio cholerae on chitin , 1979, Infection and immunity.

[22]  R. Feachem,et al.  Response of toxigenic Vibrio cholerae 01 to physico-chemical stresses in aquatic environments , 1984, Journal of Hygiene.

[23]  M. S. Islam,et al.  Attachment of toxigenic Vibrio cholerae 01 to various freshwater plants and survival with a filamentous green alga, Rhizoclonium fontanum. , 1989, The Journal of tropical medicine and hygiene.

[24]  P. Taylor,et al.  Enterotoxigenic Escherichia coli diarrhoea: acquired immunity and transmission in an endemic area. , 1981, Bulletin of the World Health Organization.

[25]  R. Colwell,et al.  Climate and infectious disease: use of remote sensing for detection of Vibrio cholerae by indirect measurement. , 2000, Proceedings of the National Academy of Sciences of the United States of America.

[26]  M. S. Islam,et al.  Survival of toxigenic Vibrio cholerae O1 with a common duckweed, Lemna minor, in artificial aquatic ecosystems. , 1990, Transactions of the Royal Society of Tropical Medicine and Hygiene.

[27]  M. Emch,et al.  Spatial and Temporal Patterns of Diarrheal Disease in Matlab, Bangladesh , 2001 .

[28]  Mercedes Pascual,et al.  Cholera Seasonality in Madras (1901–1940): Dual Role for Rainfall in Endemic and Epidemic Regions , 2007, EcoHealth.