What is true and what is false about winter sickness?

Most people get sick at some time between January and March, but even though it is called the winter sickness, you can suffer year-round.

Good hand hygiene is important to protect oneself, but a new study from Lund University suggests that air pollution is more common than previously thought.

With the help of chief physician Jan Albert from Karolinska Hospital, SVT reviews five claims about the winter sickness. What is true and what is really false?

Watch the video and test your skills .