BigData Analysis: Research has found that vaccines are the reason the pandemic continues

medRxiv Jan 6, 2022https://www.medrxiv.org/content/10.1101/2022.01.05.22268782v1BACKGROUND: Natural SARS-CoV-2 infection elicits strong protection against reinfection with the Alpha (B.1.1.7), Beta (B.1.351), and Delta (B.1.617.2) variants. However, the Omicron (B.1.1.529) variant harbors multiple mutations that can mediate immune evasion. We estimated effectiveness of prior infection in preventing reinfection (PES) with Omicron and other SARS-CoV-2 variants in Qatar.HIGHLIGHTS- Protection affor...