Experts say Canada may find it challenging to reach herd immunity for COVID-19 but a return to pre-pandemic life is possible through vaccinations.

Considered the "endgame" for a vaccination blitz, herd immunity is achieved when enough people are immune either through vaccinations, infections, or a combination of both.

Professor Paul Tupper from Simon Fraser University's mathematics department says immunity through vaccines and infection doesn't last permanently and because the virus is across the world, COVID is reintroduced in different places across borders.

The virus is being transmitted worldwide, which means it is reintroduced in different places across borders and immunity through vaccination and infection doesn't last permanently. The vaccines don't seem to be completely effective against some of the new variants, he said.

Tupper says COVID-19 may eventually become like the seasonal flu