Navigation Links
Cattle can be a source of MRSA in people, scientists find

A type of MRSA found in humans originated in cattle at least 40 years ago, new research has found.

The study provides clear evidence that livestock were the original source of an MRSA strain which is now widespread in people.

Researchers studied the genetic make-up of more than 40 strains of a bacterium -- called Staphylococcus aureus -- that can build up antibiotic resistance to develop into MRSA.

At least two genetic subtypes of the bacterium, which have become endemic in people, have been traced back to cattle by the scientists, who are based at The Roslin Institute at The University of Edinburgh.

Researchers say the most likely scenario is that the bug crossed over from cattle to people through direct contact -- perhaps through people working with farm animals.

The research will help scientists find out how the bacteria are able to spread and cause disease in humans and to prevent further strains from jumping from livestock.

After switching to human hosts, the Staphylococcus aureus bacterium became resistant to the antibiotic methicillin and developed into methicillin-resistant Staphylococcus aureus-- or MRSA. In addition, the bacteria acquired the ability to avoid attack by the human immune system. However, these bacteria that originated in cattle do not appear to be more aggressive or more resistant to antibiotics than other MRSA affecting humans.

Lead researcher, Professor Ross Fitzgerald, of The Roslin Institute, said: "Human infections caused by bacteria being transmitted directly from livestock are well known to occur. However this is the first clear genetic evidence of subtypes of Staph. aureus which jumped from cattle and developed the capacity to transmit widely among human populations'.

The study is published in the journal mBio.

Laura Spoor, of The Roslin Institute and first author on the research paper, added: "This research provides insight into how some strains of MRSA have evolved and help us better understand how they have adapted to cause disease in different host species."


Contact: Tara Womersley
University of Edinburgh

Related biology news :

1. MRSA strain in humans originally came from cattle
2. Study reveals impact of historical domestic cattle hybridization with American bison
3. A new line of defense: Researchers find cattle vaccine works to reduce E. coli O157:H7
4. Study finds mad cow disease in cattle can spread widely in ANS before detectable in CNS
5. Research reveals new clue in fight against TB in cattle
6. A greener, more sustainable source of ingredients for widely used plastics
7. Seafood still considered a good source of nutrients but consumers confused on safety
8. Healthrageous, United BioSource And Boehringer Ingelheim Launch SMART Digital Diabetes Study
9. Study identifies Deepwater Horizon debris as likely source of Gulf of Mexico oil sheens
10. Genomes of cholera bacteria from Haiti confirm epidemic originated from single source
11. Ben-Gurion U. and UChicago research collaboration targets water resource innovations
Post Your Comments:
(Date:11/4/2015)... , November 4, 2015 ... new market report published by Transparency Market Research "Home Security ... Trends and Forecast 2015 - 2022", the global home security ... 30.3 bn by 2022. The market is estimated to ... period from 2015 to 2022. Rising security needs among ...
(Date:10/29/2015)... Oct. 29, 2015   MedNet Solutions , an ... spectrum of clinical research, is pleased to announce that ... Association (MHTA) as one of only three finalists for ... – Small and Growing" category. The Tekne Awards honor ... shown superior technology innovation and leadership. ...
(Date:10/29/2015)... Va. , Oct. 29, 2015 Daon, ... today that it has released a new version of ... customers in North America have ... IdentityX v4.0 also includes a FIDO UAF certified ... are already preparing to activate FIDO features. These customers ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... , ... November 24, 2015 , ... The United States ... of the 2016 USGA Green Section Award. Presented annually since 1961, the USGA Green ... or her work with turfgrass. , Clarke, of Iselin, N.J., is an ...
(Date:11/24/2015)... , Nov. 24, 2015 Halozyme Therapeutics, Inc. (NASDAQ: ... Conference in New York on Wednesday, December ... Helen Torley , president and CEO, will provide a corporate overview. ... New York at 1:00 p.m. ET/10:00 a.m. PT . ... investor relations, will provide a corporate overview. --> th ...
(Date:11/24/2015)... ... 2015 , ... Copper is an essential micronutrient that all ... copper is also toxic to cells. With a $1.3 million award from the ... a systematic study of copper in the bacteria Pseudomonas aeruginosa (P. aeruginosa), a ...
(Date:11/24/2015)... , Nov. 24, 2015 /PRNewswire/ - Aeterna Zentaris Inc. ... IIROC on behalf of the Toronto Stock Exchange, confirms ... there are no corporate developments that would cause the ... --> --> About Aeterna Zentaris ... . --> Aeterna Zentaris is a specialty ...
Breaking Biology Technology: