Experiences and results from the surveillance programme of resistance in feed, food and animals in Norway (NORM-VET) 2000–2005

Abstract number: 1732_18

Norström M., Tharaldsen H., Sunde M.

Objectives: The monitoring programme for antimicrobial resistance in the veterinary and food production sectors (NORM-VET) was established in 2000. The goals of the programme are to monitor the antimicrobial resistance situation in feed, food and animals over time, in relation to the human situation and to the resistance situation in other countries. Data from NORM-VET could form a basis for risk assessments and be a tool for targeting interventions and further to evaluate the effectiveness of such interventions. This study was performed to summarise the experiences and results obtained during the first six years of the programme.

Methods: The zoonotic agents Salmonella (from feed, animals and food) and Campylobacter jejuni (from broiler and broiler meat) were monitored annually. E. coli and Enterococcus spp. (indicator bacteria) were sampled from various animal species and meat products biannually. Specific clinical isolates from the routine diagnostic have been included biannually. The isolates have mainly been tested using a microdilution technique (VetMICTM). The minimum inhibitory concentrations were recorded and analysed in WHONET 5.3. For the categorising of the isolates as resistant or susceptible epidemiological cut-off values were applied.

Results: The occurrence of resistance in the monitored species and products is in an international perspective low and the results from the first six years of the programme show that the situation is stable.

Conclusion: Evaluation of the first six years of the programme has recognized that the relatively low number of isolates of each species and source included complicates the conclusions possible to draw from the data, especially evaluating trends over time. Even though the run costs of the programme has been limited to a minimum, it is still useful for the purpose of monitoring antimicrobial resistance within a country as Norway, where the resistance problem in the animal and food sectors still is at a very low level. It also consists as valuable source for further research of antimicrobial resistance mechanisms and development. However, the use of this source to perform risk assessments is limited as there still is a lack of even more specific data as for instance data on usage at animal or farm level.

Session Details

Date: 31/03/2007
Time: 00:00-00:00
Session name: European Society of Clinical Microbiology and Infectious Diseases
Location: ICC, Munich, Germany
Presentation type:
Back to top