Authors
Agnieszka Figas
Department of Virology, National Institute of Public Health – National Institute of Hygiene, Warsaw, Poland
Magdalena Wieczorek
Department of Virology, National Institute of Public Health – National Institute of Hygiene, Warsaw, Poland
Anna Żuk-Wasek
Department of Virology, National Institute of Public Health – National Institute of Hygiene, Warsaw, Poland
Bogumiła Litwińska
Department of Virology, National Institute of Public Health – National Institute of Hygiene, Warsaw, Poland