The omicron variant is driving a sharp increase in COVID-19 cases across South Africa. Scientists believe the variant is more transmissible, and may even bypass acquired immunity in some people who have recovered from COVID-19. #covid19 #omicron #southafrica Watch The National live on YouTube Sunday-Friday at 9 p.m. ET Subscribe to The National: https://www.youtube.com/user/CBCTheNa... Connect with The National online: Facebook | / thenational Twitter | / cbcthenational Instagram | / cbcthenational More from CBC News | https://www.cbc.ca/news The National is CBC's flagship nightly news program, featuring the day's top stories with in-depth and original journalism, with hosts Adrienne Arsenault and Andrew Chang in Toronto, Ian Hanomansing in Vancouver and the CBC's chief political correspondent, Rosemary Barton in Ottawa.