Neanderthal gene mutations can increase or decrease risks of severe SARS2

2021 Study.) A genetic variant protective against severe COVID-19 is inherited from Neandertals

https://www.pnas.org/content/118/9/e2026309118

2020 preprint link: https://www.biorxiv.org/content/10.1101/2020.10.05.327197v3

2022 Study): https://medicalxpress.com/news/2022-02-covid-genetic-variant-hiv.html