Article
[Climate- and vector-borne diseases].
Københavns Universitet, Det Sundhedsvidenskabelige Fakultet, International Sundhed, ISIM, Denmark.
Ugeskrift for laeger
10/2009;
171(44):3175-8.
pp.3175-8
Source: PubMed
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Citations (0)
- Cited In (2)
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Article: Interannual variability of human plague occurrence in the Western United States explained by tropical and North Pacific Ocean climate variability.
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ABSTRACT: Plague is a vector-borne, highly virulent zoonotic disease caused by the bacterium Yersinia pestis. It persists in nature through transmission between its hosts (wild rodents) and vectors (fleas). During epizootics, the disease expands and spills over to other host species such as humans living in or close to affected areas. Here, we investigate the effect of large-scale climate variability on the dynamics of human plague in the western United States using a 56-year time series of plague reports (1950-2005). We found that El Niño Southern Oscillation and Pacific Decadal Oscillation in combination affect the dynamics of human plague over the western United States. The underlying mechanism could involve changes in precipitation and temperatures that impact both hosts and vectors. It is suggested that snow also may play a key role, possibly through its effects on summer soil moisture, which is known to be instrumental for flea survival and development and sustained growth of vegetation for rodents.The American journal of tropical medicine and hygiene 09/2010; 83(3):624-32. · 2.59 Impact Factor -
Article: Plague and climate: scales matter.
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ABSTRACT: Plague is enzootic in wildlife populations of small mammals in central and eastern Asia, Africa, South and North America, and has been recognized recently as a reemerging threat to humans. Its causative agent Yersinia pestis relies on wild rodent hosts and flea vectors for its maintenance in nature. Climate influences all three components (i.e., bacteria, vectors, and hosts) of the plague system and is a likely factor to explain some of plague's variability from small and regional to large scales. Here, we review effects of climate variables on plague hosts and vectors from individual or population scales to studies on the whole plague system at a large scale. Upscaled versions of small-scale processes are often invoked to explain plague variability in time and space at larger scales, presumably because similar scale-independent mechanisms underlie these relationships. This linearity assumption is discussed in the light of recent research that suggests some of its limitations.PLoS Pathogens 09/2011; 7(9):e1002160. · 9.13 Impact Factor
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Keywords
climate change
Denmark
disease patterns
ecology
endemic potential
health-care capacity
leishmaniasis
predicted changes
public health problems
socio-economy
transmission potential
vector-borne diseases