Milan is almost three months old and lives with his family in Mariefred.
A few weeks ago he had cold symptoms.
The cold got worse and worse and he was eventually admitted to the children's clinic in Eskilstuna.
It was stated that he had contracted the RS virus.
- I knew that the RS virus existed, but I did not think it would hit us so hard, says mother Sofia Berg.
Today, Milan has been allowed to come home and is on the road to recovery, but the time in the hospital was tough.
Hear Sofia Berg talk about her time at the hospital in the clip above.