Omicron variant versus Delta variant: COVID 19 infection rates and comparison of natural immunity protection. Graphic by John Burn-Murdoch / @burnmurdochFT analysis of data from South Africa’s Natural Institute for Communicable Disease Coronaviruscovid omicroncovid omicron variantCOVID-19COVID-19 immunityCOVID19immune systemIMMUNITYomicronomicron covidomicron covid variantomicron variantomicron variant covidOmicron versus Delta: infection rates and natural immunityVITAMINRelated Posts Did Your Allergies Get Worse After COVID? Watch This February 26, 2026 There may be a universal vaccine in the future. #science #vaccine #doctor February 21, 2026 The Immune Shift No One Explains After COVID February 19, 2026 Doctor Reacts: Covid masks in 2026?! February 19, 2026 ‘Particularly capricious’: Doctor weighs in on undermining of mRNA technology February 15, 2026 COVID’s Hidden Impact: Immune System Triggers Explained #shorts January 30, 2026