High heterogeneity in methods used for the laboratory confirmation of pertussis diagnosis among European countries, 2010: integration of epidemiological and laboratory surveillance must include standardisation of methodologies and quality assurance He, Q and Barkoff, A M and Mertsola, J and Glismann, S and Bacci, S and on behalf of the European Bordetella expert group (EUpertstrain), Collective and the European surveillance network for vaccine-preventable diseases (EUVAC.NET), Collective, Eurosurveillance, 17, 20239 (2012), https://doi.org/10.2807/ese.17.32.20239-en