The virus has changed several times during the year.

And that in itself is not strange, says Ali Mirazimi.

- You have to remember that the virus has changed maybe 12,000 times during this year, that there will be new viruses is not so strange.

Ali Mirazimi believes that it is unlikely that mutations in the virus will in any way prevent vaccinations from biting it.

- We have had a similar mutated virus earlier this spring and there was concern that the virus could pass the vaccine, but that was not the case.

But it is important to keep an eye on all variants of viruses that appear during the year.

See Ali Mirazimi, Professor of Clinical Virology, comment on the mutations in the clip above.