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Amid Omicron outbreak, South African president tests positive for COVID-19

As omicron cases surge, South Africa excess deaths nearly double: report

CDC chief says omicron COVID-19 variant mostly mild so far

Omicron: Pfizer-BioNTech COVID-19 vaccine may only partially protect against new variant, study suggests

Omicron variant 'almost certainly' less severe than delta, Fauci says

Next pandemic may be more lethal, scientist behind AstraZeneca vaccine warns

Fauci says officials feel 'very badly' about African travel ban, will reevaluate policy

Omicron 3 times more likely to cause reinfection than previous COVID variants: researchers

Omicron variant in the US: What we know

COVID cases double over 24 hours in South Africa, where omicron variant was discovered