e360 digest


01 Jun 2011: Climate Link to Cholera
Affirmed in New Study in Africa

A study of cholera outbreaks in Zanzibar from 1999 to 2008 has found that moderate increases in ocean temperatures and rainfall can increase the likelihood of cholera epidemics. The study, published in the American Journal of Tropical Medicine and Hygiene, found that a sea surface temperature increase of 1 degree C can lead to a doubling of cholera cases over four months and that moderate increases in rainfall can increase the incidence of cholera cases by 1.6 times. The study said a key reason for the spread of cholera outbreaks is that as ocean temperatures rise, copepods — sea organisms that carry the cholera bacteria — proliferate. Heavier rains also facilitate the spread of cholera by increasing the likelihood that cholera-contaminated seawater will spread inland to towns and villages. The study’s lead author, Mohammed Ali of the International Vaccine Institute in Seoul, Korea, said that governments could use these environmental cues to step up vaccination efforts in cholera-prone areas. A growing number of scientists contend that cholera outbreaks are related to climate and that rising air and ocean temperatures will lead to increased outbreaks of the deadly disease, which sickened more than 220,000 people in 2009.


Yale
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
.

SEARCH e360



Donate to Yale Environment 360
Yale Environment 360 Newsletter

CONNECT


ABOUT

About e360
Contact
Submission Guidelines
Reprints

E360 en Español

Universia partnership
Yale Environment 360 articles are now available in Spanish and Portuguese on Universia, the online educational network.
Visit the site.


DEPARTMENTS

Opinion
Reports
Analysis
Interviews
Forums
e360 Digest
Podcasts
Video Reports

TOPICS

Biodiversity
Business & Innovation
Climate
Energy
Forests
Oceans
Policy & Politics
Pollution & Health
Science & Technology
Sustainability
Urbanization
Water

REGIONS

Antarctica and the Arctic
Africa
Asia
Australia
Central & South America
Europe
Middle East
North America

e360 PHOTO GALLERY

“Cuba
Photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s unspoiled coral reefs.
View the gallery.

e360 MOBILE

Mobile
The latest
from Yale
Environment 360
is now available for mobile devices at e360.yale.edu/mobile.

e360 VIDEO

Warriors of Qiugang
The Warriors of Qiugang, a Yale Environment 360 video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.


header image
Top Image: aerial view of Iceland. © Google & TerraMetrics.

e360 SPECIAL REPORT

“Tainted
A three-part series Tainted Harvest looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup.
Read the series.

OF INTEREST



Yale