Covid-19 vaccine resistant variant could emerge, says expert

The video discusses the nature of virus mutations, highlighting that viruses often make random errors in their genetic code, leading to variants. Since the pandemic began, around 4000 variants have been identified, but only a few have been significant. The coronavirus is more stable than the influenza virus, meaning its mutations occur more slowly. Current vaccines are expected to remain effective against new variants, and the technology can adapt if necessary. The existing immunity, whether from previous infection or vaccination, should continue to protect against new strains.

In what way does the stability of the coronavirus compare to that of the influenza virus?

What does the text imply about the effectiveness of current vaccines against new variants?