Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Ebola outbreaks are simultaneous ’mini-epidemics’

16.01.2004


Different viral strains responding to ideal conditions

Though they may appear as single outbreaks quickly spread by people and wildlife, recent flare-ups of the deadly Ebola virus in Central Africa are actually multiple epidemics of different viral strains, simultaneously appearing when conditions are ideal, according to a study appearing in the journal Science.

The study, authored by the New York-based Wildlife Conservation Society and other groups, said that scientists previously believed that the virus forms in epicenters and quickly spreads by animals moving through the forest. Eventually people catch the disease by handling or eating infected wildlife. Ebola causes hemorrhagic fever and death within a few days for most of its victims.



"Now we know that the virus doesn’t ’spread’ as much as it spills over from many sources in the forest," said Dr. William Karesh head of WCS’s Field Veterinarian Program and co-author of the study. "This study changes the way Ebola outbreak-response teams will look at the disease and minimize its damage to both people and wildlife."

The authors discovered that an outbreak between October 2001 and May 2003 actually consisted of eight viral strains originating from different areas. What causes simultaneous flare-ups is still unknown, as are the natural hosts that spread the disease.

The authors also said that most infections among humans continue to occur after a dead or dying animal is found by a local person, noting that large numbers of animal carcasses are sometimes seen in forests just prior to humans coming down with the disease. They recommend that a monitoring network to look for dead and dying large animals be established as an early warning system.

Gorillas in particular, have been hard-hit by the Ebola, the authors said, pointing out that mortality by diseases, coupled with rampant poaching and habitat loss, may lead to their extinction in western Central Africa.

John Delaney | EurekAlert!
Further information:
http://www.wcs.org/

More articles from Ecology, The Environment and Conservation:

nachricht Loss of habitat causes double damage to species richness
02.04.2019 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

nachricht Deep decarbonization of industry is possible with innovations
25.03.2019 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Energy-saving new LED phosphor

The human eye is particularly sensitive to green, but less sensitive to blue and red. Chemists led by Hubert Huppertz at the University of Innsbruck have now developed a new red phosphor whose light is well perceived by the eye. This increases the light yield of white LEDs by around one sixth, which can significantly improve the energy efficiency of lighting systems.

Light emitting diodes or LEDs are only able to produce light of a certain colour. However, white light can be created using different colour mixing processes.

Im Focus: Quantum gas turns supersolid

Researchers led by Francesca Ferlaino from the University of Innsbruck and the Austrian Academy of Sciences report in Physical Review X on the observation of supersolid behavior in dipolar quantum gases of erbium and dysprosium. In the dysprosium gas these properties are unprecedentedly long-lived. This sets the stage for future investigations into the nature of this exotic phase of matter.

Supersolidity is a paradoxical state where the matter is both crystallized and superfluid. Predicted 50 years ago, such a counter-intuitive phase, featuring...

Im Focus: Explosion on Jupiter-sized star 10 times more powerful than ever seen on our sun

A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter

  • Coolest and smallest star to produce a superflare found
  • Star is a tenth of the radius of our Sun
  • Researchers led by University of Warwick could only see...

Im Focus: Quantum simulation more stable than expected

A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.

Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...

Im Focus: Largest, fastest array of microscopic 'traffic cops' for optical communications

The technology could revolutionize how information travels through data centers and artificial intelligence networks

Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

Fraunhofer FHR at the IEEE Radar Conference 2019 in Boston, USA

09.04.2019 | Event News

 
Latest News

Proteins stand up to nerve cell regression

24.04.2019 | Life Sciences

New sensor detects rare metals used in smartphones

24.04.2019 | Life Sciences

Controlling instabilities gives closer look at chemistry from hypersonic vehicles

24.04.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>