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Mammaliicoccus sciuri: The Resistome Behind Bovine Mastitis
All six mastitis-associated Mammaliicoccus sciuri genomes in a recent dairy survey carried mecA, yet only half of the isolates looked resistant on a standard cefoxitin disk test. The resistome spanned nine antibiotic classes, and two of the six isolates met the definition of multidrug resistance. Virulence and biofilm genes were widespread, but none of it proves this organism was the main cause of the mastitis it was found in. Why Mammaliicoccus sciuri matters in dairy herds Most of the damage mastitis does to a dairy business never shows up on the udder. Surveillance reports put annual incidence at roughly 20 to 40 percent of dairy animals worldwide, and subclinical cases…
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Antimicrobial resistance in poultry: broiler carcass study
Antimicrobial resistance in poultry is already a present-day problem, not a distant one. A study of 60 Brazilian broiler carcasses found multidrug-resistant Salmonella, Escherichia coli, and ESKAPE pathogens carrying clinically relevant resistance genes. Genomic analysis linked several isolates to human infection strains, showing poultry can act as a reservoir for bacteria that threaten human treatment. The findings point to gaps in current surveillance. Why antimicrobial resistance in poultry matters for food safety Brazil is the world’s largest chicken meat exporter, and global production reached 128 million tons in 2024, overtaking pork as the most produced meat. Poultry now supplies the largest share of animal protein consumed worldwide, with forecasts putting…
