Covid explained: B.1.617.3, a relative of the Delta variant; B.11.318, which contains 14 mutations; Lambda, a variant discovered by Public Health England and classed as a VOI by the WHO; and Kappa or B.1.617.1 are among the variants.
Lambda Covid variant explained: The variant, also known as the C.37 strain, was first detected in Peru in August 2020.
The Lambda Covid variant was identified as a variant of interest by the WHO on June 14 and so far, it has been detected in 25 countries.
The Public Health Agency of Canada is monitoring Lambda to see how it spreads and how it responds to vaccines, Tam said.