Credits and acknowledgements  Modify text below. For authorship, see ECDC policy Keep it short and straightforward.  Acknowledgements, if necessary, must be kept as short as possible (no more than a short paragraph).  If there is a large team of authors, names and institutions can be included in a table.  Thistext boxwillbe deletedby the ECDC editorialteam after completion of the document.  This report was commissioned by the European Centre for Disease Prevention and Control (ECDC) [reference to  the specific procurement documents], coordinated by [name of ECDC project manager], and produced by  [contractor(s)].  [Name, affiliation]; [Name, affiliation]; [Name, affiliation]  This report was sent for consultation to [XYZ]. [Optional]  Authors  Acknowledgements[Optional]  [Free text]  Suggested citation: As per ECDC technical report  3 