Schneider, K., Barreiro-Hurle, J., Vazquez-Torres, E., Di Cori, V. and Rodriguez-Cerezo, E., Ranking of Union Quarantine Pests based on their potential economic, social and environmental impacts to support the identification of “priority pests” - An update of the Integrated Indication for Priority Pests (I2P2), Publications Office of the European Union, Luxembourg, 2025, https://data.europa.eu/doi/10.2760/3350558, JRC141239.

A visualisation tool is available at https://datam.jrc.ec.europa.eu/datam/mashup/I2P2_INDICATORS_2024/ 

This report presents a two-step approach to rank European Union Quarantine Pests (UQPs) based on their potential economic, social, and environmental impacts. In the first step, a shortlisting methodology was developed and applied to approximately 400 UQPs to select a subset of pests which were subject to a more detailed analysis in the second one. The shortlisted 46 pests were evaluated using an updated and modified version of the Impact Indicator for Priority Pests (I2P2) a composite indicator based on multi-criteria analysis. To calculate I2P2 values expert knowledge elicitations were conducted by EFSA for key parameters and these combined with a diversity of secondary data sources. The I2P2 model combines economic, social, and environmental impact into a single value which is subsequently used to rank pests. We assessed robustness of our recommendation with regards to uncertainty on the biological parameters as well as risk managers’ preference on avoiding impacts in the different domains. In addition we inform on the driving factors behind the composite scores.