Scientists Scramble to Understand ‘Very High’ Risk Omicron Variant

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A medical worker in protective suit administers a BioNtech-Pfizer Covid-19 coronavirus vaccine
 (Photo by TED ALJIBE/AFP via Getty Images)

The World Health Organization today warned that the global risk from the new COVID-19 variant, Omicron, is “very high”. The variant, first discovered in South Africa, has now been detected in more than a dozen countries. We’ll talk about what we know so far about how contagious the variant is and how effective vaccines are likely to be against it.


Dr. Kirsten Bibbins-Domingo, professor of medicine and chair of the Department of Epidemiology and Biostatistics, UCSF School of Medicine