A cluster of measles linked to an imported case, Finland, 2017 Seppälä, Elina and Zöldi, Viktor and Vuorinen, Sakari and Murtopuro, Satu and Elonsalo, Ulpu and van Beek, Janko and Haveri, Anu and Kontio, Mia and Savolainen-Kopra, Carita and Puumalainen, Taneli and Sane, Jussi, Eurosurveillance, 22, 30595 (2017), https://doi.org/10.2807/1560-7917.ES.2017.22.33.30595