Wageningen University scientists have looked at why there are discrepancies in Salmonella results between poultry farmers’ and authorities’ tests.
Experts analyzed factors associated with the difference between positive tests from routine initial Salmonella monitoring by poultry farmers and negative results of a retest by the Netherlands Food and Consumer Product Safety Authority (NVWA). Retests are based on suspicions of a false positive result from routine monitoring.
The work, commissioned by the Ministry of Agriculture, Nature and Food Quality (LNV), gave an insight into results during Salmonella surveillance of Dutch adult breeding flocks.
Researchers said there is good reason to make retesting of initial positive results from routine Salmonella monitoring again possible in the EU. This would only involve 10 to 15 cases per year in the Netherlands. The country had to change its approach in early 2020 because of pressure from the European Commission for retests only if there is “reasonable doubt” about a first result.