Why might new variants like Omicron spread more easily? The EconomistInfographic: How Omicron compares with other COVID variants Aljazeera.comOmicron: What the Data Really Show MedscapeVirus mutations and variants like omicron: How and why they mutate WDIV ClickOnDetroitSARS-CoV-2 Omicron variant: What we know so far News-Medical.netView Full Coverage on Google News