Lycksele schools were hit hard by covid-19 earlier in February, where 162 students were confirmed infected with covid-19.

The schools closed and about 900 students were kept at home and it was established that the school was the hub for the spread of infection.

Skellefteå also had to send the students home for distance learning.

In the past week, the Prolympia School in Umeå, among other places, has been hit hard by the spread of infection.

In Vilhelmina, the students at Volgsjö and Hembergsskolan receive distance education and the decision applies "as far as possible also to preschool".

"Infection occurs between adults"

Last week, the infection control tightened recommendations for all families with children in Västerbotten, where you should keep children at home from school and preschool if someone in the family shows symptoms.

Despite this, the infection control doctors in Västerbotten stand by their previous views on children and infection.

- Most infections occur between adults, says Thunberg.

Hear infection control doctor Therese Thunberg talk about why the infection is spread in schools - and whether it is time to introduce oral protection requirements.