Discussion
Acute and massive bee mortality - Mass spectrometry as investigation tool

The case presented demonstrates the value of an approach based on two types of mass spectrometry as a screening and quantification tool during acute mass bee deaths. In 2016 and 2017, the national MMAA surveillance system recorded 147 declarations from 50 departments and 195 from 52 departments respectively. In total for these two years, eleven cases of confirmed acute intoxication were identified. Probable cases of intoxication, substances and prohibited uses were also identified as a result of the investigations carried out.