Netflix’s decision to deep-clean The Witcher‘s sets as an additional precaution is the smart and responsible thing to do in a case like this. While production on The Witcher had been put on pause prior to learning of Kristofer Hivjuâs diagnosis, itâs definitely better to be safe than sorry, especially considering that actor no doubt came into contact with several crew and cast members while working on set, possibly passing the virus to others. The memo does, however, reassure The Witcher staff that the World Health Organization (WHO) âstates that the risk of catching COVID-19 from someone with no symptoms is very low,â so there’s hope that no one else was affected.