Cross and co resistance among Danish porcine E. coli isolates

Area of Science:

• Veterinary Microbiology
• Antimicrobial Resistance
• Public Health Surveillance

Background:

• Antimicrobial resistance (AMR) is a growing global health concern.
• Escherichia coli (E. coli) from animal sources can act as reservoirs for AMR genes.
• The DANMAP surveillance program monitors antimicrobial use and resistance in Denmark.

Purpose of the Study:

• To investigate cross-resistance and co-resistance patterns in Danish porcine E. coli isolates.
• To assess the relationship between resistance to low-classified and critically important antimicrobials.
• To analyze data from the DANMAP surveillance not previously used for this specific purpose.

Main Methods:

• Analysis of 765 E. coli isolates of porcine origin collected between 2009 and 2013.
• Utilizing existing data from the DANMAP surveillance program.
• Evaluating patterns of cross-resistance and co-resistance to various antimicrobials.

Main Results:

• The study identified significant cross-resistance and co-resistance among E. coli isolates.
• Ampicillin, a low-classified antimicrobial, was found to correlate with resistance to critically important antimicrobials.
• These findings demonstrate a link between the use of certain antimicrobials in swine and the emergence of resistance relevant to human medicine.

Conclusions:

• Antimicrobial stewardship in swine production is crucial to mitigate the spread of resistance.
• The use of less critical antimicrobials can inadvertently promote resistance to medically important drugs.
• Continued surveillance and analysis are essential for understanding and combating AMR in food-producing animals.