Singapore study finds multidrug-resistant bacteria in sick pets
An analysis of diagnostic reports from a veterinary clinic in Singapore suggests sick companion pets could be a reservoir for multidrug-resistant bacteria, according to a letter published in Antimicrobial Resistance and Infection Control.
Researchers from Singapore's Environmental Health Institute analyzed 186 diagnostic reports from a single, community-based companion animal practice from 2014 to 2016. The reports included antibiotic susceptibility results from bacteria isolated from sick dogs and cats after initial treatment was ineffective. Bacterial specimens were collected from wounds/abscesses, ear swabs, urine, and skin and nasal swabs.
Resistance to multiple antibiotics and was observed in the samples, with 45% (162 of 359 bacterial isolates) showing multidrug resistance (i.e. resistance to at least 3 antibiotic classes) and 40% (144/359) displaying resistance to one to two antibiotic classes. Extended-spectrum beta-lactamase (ESBL)-producing organisms were found in 18% (66/359) of the isolates. Resistance to broad-spectrum antibiotics was also observed in individual species, including methicillin resistance in Staphylococcus pseudintermedius (the most frequently detected bacteria) and Staphylococcus aureus, fluoroquinolone resistance in Escherichia coli, and carbapenem resistance in Klebsiella pneumoniae.
The authors write, "The detection of these clinically relevant bacteria suggests that sick pets, as they live in close proximity with their owners, may play a role in the transmission of AMR [antimicrobial resistance] between animal and human sources. Conversely, pet owners may also play a role in this transmission."
They suggest a more extensive study on the epidemiology of AMR bacteria carried by sick pets is necessary to better understand the extent of distribution, the direction, and risk factors for transmission.
Aug 31 Antimicrob Resist Infect Control study
Advocates press Maryland governor on livestock antibiotic regulations
A coalition of health and environmental advocacy groups today delivered a letter urging Maryland governor Larry Hogan to revise regulations for legislation aimed at curbing antibiotic use in livestock, according to a press release from Maryland PIRG (Public Interest Research Group).
The Keep Antibiotics Effective Act, passed by the Maryland legislature in 2017 without a signature from the governor, eliminates the routine use of antibiotics in animals that aren't sick. But supporters of the legislation have argued that draft regulations released recently by the Maryland Department of Agriculture contain significant loopholes and fail to carry out the legislature's intent. The public comment period for the draft regulations ends today.
"We must act now to preserve these life-saving drugs for future generations," Maryland PIRG director Emily Scarr said in the press release. "Governor Hogan should strengthen the Department of Agriculture's proposed regulations to ensure antibiotics are reserved for when they are needed most: for sickness and surgery."
The letter was signed by more than a dozen groups, including Maryland Sierra Club, the Society of Infectious Disease Pharmacists, and the Maryland Nurses Association.
Sep 4 Maryland PIRG press release