European Food Safety Authority (EFSA), via Carlo Magno 1A, 43021 Parma, Italy. Electronic address: antonio.fernandezdumont@efsa.europa.eu. Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Manchester Institute of Biotechnology, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester, UK. Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre, Leiden 2333, ZA, The Netherlands. Instituto de Investigación en Ciencias de la Alimentación, CIAL (CSIC-UAM), C/ Nicolás Cabrera, 9, Campus de la Universidad Autónoma de Madrid, 28049 Madrid, Spain.