Process Hygiene Criterion for and Number of Enteritis Cases in Northwest Germany.

Campylobacteriosis is the most commonly reported bacterial foodborne disease in the European Union. Its transmission is often associated with the consumption of poultry meat. In 2018, Regulation (EC) No. 2017/1495 introduced a process hygiene criterion and with this, the testing requirements for . The results of microbiological testing for of chicken carcass neck skin samples from several slaughter lines in Northwest Germany collected by the food business operators and contamination levels (cfu/g ) of these samples were analysed from 2018 to 2021. Classification into three different categories was made based on contamination levels. The proportion of highly contaminated (category three) neck samples (>1000 cfu/g) decreased from 2018 to 2021. Our analysis showed a relationship between the number of neck samples with high contamination levels (>1000 cfu/g) and human cases in Northwest Germany. Spearman's rank test ( < 0.01) showed a higher correlation in 2018 (0.66) and 2019 (0.58) compared to 2020 and 2021. enteritis cases in Northwest Germany stayed at a low level in 2020 and 2021. It remains unclear whether the decrease in reported enteritis cases is related to a decrease in levels on chicken carcasses or due to other reasons like underreporting during the COVID-19 pandemic, and therefore must be investigated in further analyses.