At present, people with so-called severe obesity - those with a body mass index (BMI) of 40 or higher - are included in phase 3 of the Swedish Public Health Agency's guidelines for vaccination against covid-19.

Just like people with diabetes and high blood pressure.

Johanna Uddén Hemmingsson is chief physician at St Göran's Hospital and chairman of the Swedish Association for Obesity Research.

She is one of several researchers and doctors who think that people who suffer from obesity and have a BMI between 30-39.9 - should also be prioritized and included in phase 3.

- I feel a huge concern that very many are exposed to this risk of being hit hard, she says.

- Obesity is a serious risk factor for covid-19.