Letter to the editor: Chlamydia trachomatis samples testing falsely negative in the Aptima Combo 2 test in Finland, 2019 Unemo, Magnus and Getman, Damon and Hadad, Ronza and Cole, Michelle and Thomson, Nicholas and Puolakkainen, Mirja and Spiteri, Gianfranco, Eurosurveillance, 24, 1900354 (2019), https://doi.org/10.2807/1560-7917.ES.2019.24.24.1900354