On Friday, there were 48 people in the swimming pool in Härnösand to work on the recordings.
One of them was 11-year-old Erna-Stina Edholm Skanfors from Älandsbro.
- I am part of the task force and we will try to find a cure for the zombie disease.
Today we have been chased by zombies, among other things, says Erna-Stina.
How do you notice the corona restrictions?
- It is extra important to wash your hands and use rubbing alcohol, not much else.
I was most worried before that I would get sick so I could not be on the recordings, says Erna-Stina.
Lives in piles
To ensure that no infection is spread, SVT has made some corrections in the script so that there are not as many in the different scenes.
In addition, the staff has been limited and the film team lives quite isolated in a bunker at Hemsö fortress.
- Everyone is symptom-free and we are very careful with hand alcohol, says project manager Maria Höglund.
Later, Heidi Moore from Örnsköldvik will also join the recordings, which run until 25 September.
The third season of SVT's children's program premieres week 52.