From having an underlying health condition to being obese, a number of risk factors have been shown to increase your risk of coronavirus.
Now, researchers at Karolinska Institutet and Max Planck Institute for Evolutionary Anthropology claim that people with Neanderthal genes are also at higher risk of developing severe Covid-19.
In the study, the team analysed a gene cluster on chromosome 3, and found that people with a certain version of this gene cluster were three times more likely to have severe Covid-19.
A further analysis revealed that this version is very similar to the DNA sequences of 50,000-year-old Neanderthals from Croatia.