We are very aware of the enormous dangers of antibiotic resistant E-Coli bacteria in raw meat with this paper released urgently in April 2020 when every country was in lockdown. In July 2021, a news story was published linking raw feeding of dogs to antimicrobial resistance which could very well be the next pandemic we are faced with.
The Science Times reported findings from the European Congress of Clinical Microbiology & Infectious Diseases (ECCMID) as ‘raw dog food contains significant amounts of antibiotic-resistant bacteria, making them a public health risk to Europe and the rest of the world.’
Antibiotic resistant bugs can render minor injuries and common infections potentially deadly.
Resistance has grown in recent years because of the overuse of such drugs in humans and farm animals.
The bacteria can live harmlessly in human and animal intestines but can be dangerous in other parts of the body and can be resistant to antibiotics.
Researchers found that all of the raw dog food samples contained antibiotic-resistant Enterococci, including bacteria resistant to the last-resort antibiotic linezolid.
Genetic sequencing revealed that some of these antibiotic-resistant bacteria in the raw dog food were the same kind found in hospital patients in the UK, Germany and the Netherlands.
“The close contact of humans with dogs and the commercialisation of the studied brands in different countries poses an international public health risk,” said researcher Ana Freitas.
“European authorities must raise awareness about the potential health risks when feeding raw diets to pets and the manufacture of dog food, including ingredient selection and hygiene practices, must be reviewed.”
In a separate study, which has not yet been submitted to a medical journal for publication, another team from Portugal tested pet owners and animals from 80 households for bacteria with the MCR-1 gene, which provides resistance to the last-resort antibiotic colistin.
All 126 humans were healthy, while half of the 102 pets sampled had either skin or urinary tract infections.
Four humans and eight dogs tested positive for bacteria carrying MCR-1, and in two households the gene was found in both the dog and its owner.
“Genetic analysis of the samples suggested that in one of these two cases, the gene had been transmitted between pet and owner,” he research said, adding that it was thought the gene passed from dog to human.
This raised concerns that pets could spread resistance to last-resort antibiotics.
The WHO classes antibiotic resistance as one of the greatest public health threats facing humanity. Drug-resistant infections kill an estimated 700,000 people a year globally and the UN has warned that could rise to 10 million by 2050 if no action is taken.
Summary of the findings:
* 19 samples of dog food out of 46 contained Enterococci.
* All 9 of the raw dog food samples contained multidrug-resistant Enterococci. Genetic sequencing showed some of the resistant bacteria in the raw dog food were identical to bacteria isolated from hospital patients.
* 40% of all samples containing Enterococci were resistant to erythromycin, quinupristin-dalfopristin, streptomycin, tetracycline, gentamicin, ampicillin, ciprofloxacin, or chloramphenicol. All antibiotics we rely upon to treat common bacterial infections.
* 23% of samples containing Enterocci were resistant to linezolid. This included 78% of the raw-frozen diets tested. This is an antibiotic used as a last resort, when bacteria is resistant to more commonly used antibiotics.
* 3 of the 19 non-raw samples contained multidrug-resistant bacteria.
Raw-frozen foods for dogs carry multi-drug resistant enterococci including last-resort medication for the treatment of human infections (linezolid). The close contact of pets with humans and the commercialisation of the studied brands in different EU countries pose an international Public Health risk if transmission of such strains occurs between dogs and humans.
Dr Freitas, one of the researchers, said “European authorities must raise awareness about the potential health risks when feeding raw diets to pets and the manufacture of dog food, including ingredient selection and hygiene practices, must be reviewed.”
An outstanding article from vet nutritional specialist Dr Mike Davies, re pet food in general (most of which is meat-based) appeared in Vet Times January 2023. See sections of what he wrote about raw food and the risk that it still holds in the attached articles.
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