Directly contradicts a story from 5 months ago: https://news.ycombinator.com/item?id=24637337

That story

>A study published in Nature shows that a segment of DNA that causes their carriers to have an up to three times higher risk of developing severe COVID-19 is inherited from Neandertals. The study was conducted by researchers at Karolinska Institutet and Max Planck Institute for Evolutionary Anthropology.

This story

>We show that a haplotype on chromosome 12, which is associated with a ∼22% reduction in relative risk of becoming severely ill with COVID-19 when infected by SARS-CoV-2, is inherited from Neandertals. This haplotype is present at substantial frequencies in all regions of the world outside Africa. The genomic region where this haplotype occurs encodes proteins that are important during infections with RNA viruses.