Researchers from The Roslin Institute of the University of Edinburgh have shown that a strain of bacteria has jumped from humans to chickens.
It is believed to be the first clear evidence of bacterial pathogens crossing over from humans to animals and then spreading since animals were first domesticated some 10,000 years ago.
The study identified a form of the bacteria Staphylococcus aureus – of which MRSA is a subtype – in chickens, and found that the bacteria originally came from humans.
Genetic testing showed that the bacteria crossed over from one species to another around 40 years ago, coinciding with a move towards intensive poultry farming practices.
In comparison to the corresponding form of Staphylococcus aureus in humans, which was isolated to one geographical area, the strain in chickens was spread across different continents.
Infectious diseases in chicken flocks are a major economic burden on the industry and the spread of bacteria from humans to chickens could have a huge impact on poultry farming. If bacteria are also shown to be crossing over from humans to other livestock then there could be an impact on food security.
Dr. Ross Fitzgerald, of The Roslin Institute, said: "Half a century ago chickens were reared for their eggs, with meat regarded as a by-product. Now the demand for meat has led to a poultry industry dominated by a few multinational companies which supply a limited number of breeding lines to a global market - thereby promoting the spread of the bacteria around the world."
The bacteria are a major cause of animal diseases, including bone infections in poultry. Further research will look at analysing other livestock for emerging pathogens and diseases which may have come from humans.
The study is published in the Proceedings of the National Academy of Sciences.
*The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
Tara Womersley | EurekAlert!
Smart Data Transformation – Surfing the Big Wave
02.12.2016 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
Climate change could outpace EPA Lake Champlain protections
18.11.2016 | University of Vermont
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
08.12.2016 | Materials Sciences
08.12.2016 | Materials Sciences
08.12.2016 | Physics and Astronomy