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Climate change could drive rise in debilitating disease

Date:
August 6, 2014
Source:
Bournemouth University
Summary:
A disease prevalent in developing countries could be spread by the changes in rainfall patterns according to a new study. Buruli ulcer affects thousands of people every year, mainly in developing countries, and in the worst cases can cause fatality or permanent disability. The devastating bacterial infection starts with an area of swelling that becomes ulcerated, causing painful open wounds and necrosis of the skin. It is unknown how the water-borne disease is transmitted.

A disease prevalent in developing countries could be spread by the changes in rainfall patterns according to a new study.

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Buruli ulcer affects thousands of people every year, mainly in developing countries, and in the worst cases can cause fatality or permanent disability. The devastating bacterial infection starts with an area of swelling that becomes ulcerated, causing painful open wounds and necrosis of the skin. It is unknown how the water-borne disease is transmitted.

The study, published in Emerging Microbes and Infections, found a strong link between Buruli ulcer outbreaks in French Guiana, in South America, and changes in complex rainfall patterns, including extreme rainfall events driven by the El Niño Southern Oscillation (ENSO). ENSO refers to warm and cool ocean-atmosphere events that take place off the coast of Western South America -- with the study showing that this atmospheric anomaly can affect the spread of disease in this area.

Researchers from Bournemouth University found that outbreaks of Buruli ulcer can be triggered by changes in climate, with rainfall playing a large part in the spread of the disease.

Bournemouth University's Aaron Morris was lead investigator on the research project as a part of his PhD. Aaron said, "Understanding how infection levels respond to climatic factors is hugely important, particularly with poorly understood, emergent diseases such as Buruli ulcer. These links help us shed light on their ecology and enable us to more accurately predict outbreaks. They are also vital in understanding how climate change will affect the dynamics and emergence of pathogens in the future."

The research has focussed on the link between biodiversity and the spread of diseases in humans, with field research conducted in French Guiana focussing on Buruli ulcer. Biodiversity is an unpredictable and under-researched driving force in the prevalence and transmission of diseases, and this study shows the link between changing ecosystems and the occurrence of disease.

Bournemouth University experts Demetra Andreou, Rodolphe Gozlan and Hossein Hassani were also instrumental in researching Buruli ulcer.

As a result of the research, it may be possible to predict and prevent future outbreaks of the debilitating infection by predicting future weather patterns in countries that are susceptible to the disease and to fluctuating patterns of rainfall. The research also paves the way for future research into the impact of biodiversity and climate change on the spread of diseases.


Story Source:

The above story is based on materials provided by Bournemouth University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Aaron Morris, Rodolphe E Gozlan, Hossein Hassani, Demetra Andreou, Pierre Couppié, Jean-François Guégan. Complex temporal climate signals drive the emergence of human water-borne disease. Emerging Microbes & Infections, 2014; 3 (8): e56 DOI: 10.1038/emi.2014.56

Cite This Page:

Bournemouth University. "Climate change could drive rise in debilitating disease." ScienceDaily. ScienceDaily, 6 August 2014. <www.sciencedaily.com/releases/2014/08/140806102728.htm>.
Bournemouth University. (2014, August 6). Climate change could drive rise in debilitating disease. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2014/08/140806102728.htm
Bournemouth University. "Climate change could drive rise in debilitating disease." ScienceDaily. www.sciencedaily.com/releases/2014/08/140806102728.htm (accessed November 25, 2014).

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