Dr. Peter Juni, scientific director of Ontario’s COVID-19 Science Advisory Table, talks to Andrew Chang about how long immunity may last after acquiring the Omicron variant and its impact on if people can transmit the virus.

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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.