This is the bacterium Staphylococcus aureus resistant to methicillin (MRSA), containing a mecA gene, responsible for antibiotic resistance 
Scientists have not yet determined if it is a bacteria passed from cattle to humans, or if the new MRSA has gone the way contrary (Foto: Reuters )
A group of scientists in humans and cows detected a new strain of Staphylococcus aureus bacteria resistant to antibiotics of penicillin group, according to the journal Lancet infectious diseases.
The discovery was made following the work of Spanish veterinary epidemiologist Laura Garcia-Alvarez, associate researcher at Imperial College London, who identified, while preparing his doctoral thesis at the University of Cambridge, various samples of bacteria who showed resistance to antibiotics and did not detect common tests.
The new strain of Staphylococcus aureus resistant to methicillin (MRSA), contains a gene mecA, responsible for resistance to antibiotics, which retains only 60% similarity to the mecA gene that share 99% of MRSA known, so that the new strain went unnoticed in clinical trials, according to epidemiologist told EFE.
After identifying 13 samples of the bacteria called LGA251, cow's milk, researchers found 50 cases in humans in the United Kingdom and Denmark in 2010 and are currently developing the first tests in other European countries like Portugal, Germany and Holland , Garcia-Alvarez said.
The discovery was made following the work of Spanish veterinary epidemiologist Laura Garcia-Alvarez, associate researcher at Imperial College London, who identified, while preparing his doctoral thesis at the University of Cambridge, various samples of bacteria who showed resistance to antibiotics and did not detect common tests.
The new strain of Staphylococcus aureus resistant to methicillin (MRSA), contains a gene mecA, responsible for resistance to antibiotics, which retains only 60% similarity to the mecA gene that share 99% of MRSA known, so that the new strain went unnoticed in clinical trials, according to epidemiologist told EFE.
After identifying 13 samples of the bacteria called LGA251, cow's milk, researchers found 50 cases in humans in the United Kingdom and Denmark in 2010 and are currently developing the first tests in other European countries like Portugal, Germany and Holland , Garcia-Alvarez said.
"The first bacterium of this type that we found from a sample of 1975, so it takes at least 36 years to circulate, but we have not detected until is now because we did not have the necessary tools, " said epidemiologist.
Professor of veterinary preventive medicine at the University of Cambridge Mark Holmes, who led the investigation, said the bacteria has a "extensive distribution" map, but its incidence in absolute numbers is very low, but did not rule out an increase cases in the years when extending new clinical trials for them.
Scientists have not yet determined if it is a bacteria passed from cattle to humans, or if the new MRSA has gone the way contrary, but in any case ensure that the consumption of cow's milk does not pose any risk of infection, since the process of pasteurization eliminates entirely to Staphylococcus aureus.
An estimated one third of people have in their bodies antibiotic-resistant bacteria, particularly of the skin and nasal passages, although the medical complications associated with MRSA tend to occur in hospital patients undergoing any surgical intervention.
In patients with weak immune systems, these bacteria can cause anything from skin problems to blood infections.
Professor of veterinary preventive medicine at the University of Cambridge Mark Holmes, who led the investigation, said the bacteria has a "extensive distribution" map, but its incidence in absolute numbers is very low, but did not rule out an increase cases in the years when extending new clinical trials for them.
Scientists have not yet determined if it is a bacteria passed from cattle to humans, or if the new MRSA has gone the way contrary, but in any case ensure that the consumption of cow's milk does not pose any risk of infection, since the process of pasteurization eliminates entirely to Staphylococcus aureus.
An estimated one third of people have in their bodies antibiotic-resistant bacteria, particularly of the skin and nasal passages, although the medical complications associated with MRSA tend to occur in hospital patients undergoing any surgical intervention.
In patients with weak immune systems, these bacteria can cause anything from skin problems to blood infections.
Staphylococcus aureus are primarily responsible for hospital infections, and cause medical problems to 2% of patients admitted to a clinic in the UK, according to data from the Wellcome Trust Sanger Institute, who participated in genetic analysis new bacteria.
In industrialized countries, these bacteria are increasing in recent years its resistance to antibiotics, and it is estimated that between 40 and 60% of them have stopped responding to treatment with common antibiotics.
In industrialized countries, these bacteria are increasing in recent years its resistance to antibiotics, and it is estimated that between 40 and 60% of them have stopped responding to treatment with common antibiotics.
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