Swedish news site's Christmas party ended in vomit fest.

[Celerity]

6. calicivirus

Winter vomiting disease - calicivirus

Winter sickness is caused by the calicivirus and spreads very easily. If you get sick, it is often enough to rest and drink properly. You usually get better within one to three days. A good way to avoid infection is to wash your hands thoroughly with soap and water.

Winter sickness is most relevant between November and April. Most people get sick between January and March. That's why it's called winter sickness. But you can get winter sickness all year round. Winter sickness is the most common type of stomach ailment in Sweden. But you can also get sick to your stomach for other reasons .