The Ebola virus has killed some 1,300 people in Central Africa over the last 30 years. In most of these cases where it has been possible to trace the source of the outbreak, it has been associated with the consumption of contaminated apes or antelopes. But very little has been known about contagion in natural populations.
In the present study an international research team, including a group from Uppsala University in Sweden, has tracked two outbreaks and followed their spread among a gorilla population in Lossi Reservation in the Republic of Congo. The gorilla populations have been monitored by some of the scientists since 1995. As a result of this, 17 gorilla groups with a total of 238 individuals have grown accustomed to the presence of humans. However, two outbreaks of Ebola virus, one between October 2002 and January 2003 and the other between October 2003 and January 2004, led to the death of 221 of them (93%). To examine whether this high mortality rate also affected the area outside the reservation, the researchers carried out a study of a larger area (2,700km2) and found that 96 percent of the gorillas had disappeared. A total of 5,000 gorillas are estimated to have died from Ebola.
“These figures unfortunately represent merely a portion of the area that the virus has infected, and gorillas are continuing to die in this region,” says Carles Vilà.
Careful monitoring has revealed that the transmission between gorilla groups has probably played a key role in the spread of the disease. This also means that the researchers reject the possibility that the outbreaks were the result of a massive transmission of the virus from a reservoir (e.g. mosquitoes or bats). An important conclusion of the study is therefore that vaccinating the as yet unaffected gorillas may be a key measure to stop the spread of Ebola among gorillas.
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28.03.2017 | University of California - Riverside
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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