About the Authors

Tapani Hovi

tapani.hovi@thl.fi

Affiliation Virology Unit, Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, a WHO Collaborating Centre for Poliovirus Surveillance and Enterovirus Research, Helsinki, Finland

Anja Paananen

Affiliation Virology Unit, Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, a WHO Collaborating Centre for Poliovirus Surveillance and Enterovirus Research, Helsinki, Finland

Soile Blomqvist

Affiliation Virology Unit, Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, a WHO Collaborating Centre for Poliovirus Surveillance and Enterovirus Research, Helsinki, Finland

Carita Savolainen-Kopra

Affiliation Virology Unit, Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, a WHO Collaborating Centre for Poliovirus Surveillance and Enterovirus Research, Helsinki, Finland

Haider Al-Hello

Affiliation Virology Unit, Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, a WHO Collaborating Centre for Poliovirus Surveillance and Enterovirus Research, Helsinki, Finland

Teemu Smura

Affiliation Virology Unit, Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, a WHO Collaborating Centre for Poliovirus Surveillance and Enterovirus Research, Helsinki, Finland

Hiroyuki Shimizu

Affiliation Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan

Katarina Nadova

Affiliation Health Centre, Municipality of Skalica, Skalica, Slovak Republic

Zdenka Sobotova

Affiliation National Reference Centre for Poliomyelitis, Authority of Public Health of the Slovak Republic, Bratislava, Slovak Republic

Eugene Gavrilin

Affiliation Division of Communicable Diseases, Health Security and Environment, World Health Organization, Regional Office for Europe, Copenhagen, Denmark

Merja Roivainen

Affiliation Virology Unit, Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, a WHO Collaborating Centre for Poliovirus Surveillance and Enterovirus Research, Helsinki, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TH EG MR. Performed the experiments: AP SB ZS KN HA HS. Analyzed the data: TH SB CSK TS MR. Wrote the paper: TH CSK TS SB.