Surveillance of healthcare-associated infections remains a priority aspect of the Commission’s work to prevent these infections. Surveillance implementation guides for central line–associated bloodstream infections and Clostridioides difficile infection have been updated after wide consultation with key stakeholder groups. The surveillance implementation guide for Staphylococcus aureus bacteraemia is currently under review, and an updated edition will be published early in 2020–21 to coincide with the rollout of the revised national S. aureus bacteraemia reporting benchmark on 1 July 2020. The Commission published an online resource compendium to support the implementation of the revised benchmark; this will be updated as new resources become available.