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Airlines cancel holiday flights due to omicron impacts on crews
As of Thursday evening, United Airlines has proactively cancelled 112 flights for Christmas Eve
Omicron Jumps to Dominance Within Weeks of Its Emergence (infographic)
The highly infectious Omicron variant is causing Covid-19 cases to double every 1.5 to 3 days in regions with community transmission
Covid-19 Vaccines: From Zero to 11.2 Billion in a Year (infographic)
Vaccines are still in short supply in many places in the world