Multidrug-Resistant E. coli in Portuguese Cattle Breeds
Author Information
Author(s): Quinteira Sandra, Dantas Rui, Pinho Luís, Campos Carla, Freitas Ana R., Brito Nuno V., Miranda Carla
Primary Institution: University of Porto
Hypothesis
What are the phenotypic profiles and antibiotic resistance genes in E. coli isolated from bovines, including native Portuguese breeds?
Conclusion
The study found a concerning presence of multidrug-resistant E. coli in native Portuguese cattle breeds.
Supporting Evidence
- 92% of isolates were resistant to at least one antibiotic.
- 59% of isolates exhibited multidrug resistance.
- 39% of isolates were identified as ESBL producers.
Takeaway
This study shows that some cows in Portugal have bacteria that are hard to treat with antibiotics, which can be dangerous for people.
Methodology
The study analyzed 49 E. coli isolates from pooled fecal samples of cattle, using MALDI-TOF MS for identification and antimicrobial susceptibility testing.
Limitations
The study may not represent all cattle breeds or farming practices in Portugal.
Participant Demographics
The study included dairy cattle raised in intensive systems and native breeds raised in extensive systems in Northern Portugal.
Digital Object Identifier (DOI)
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