he Covid19 delta variant has at least six mutations more than the alpha variant. However, believe it or not, the increase transmissibility delta is the result of one single point mutation (!!!!)

How do mutations happen if viruses do not replicate by themselves? As more and more people get infected all throughout the world, can we expect more variants? Can immunization help stop the development of new variants?

watch this video to help you answer:

https://youtu.be/Ha6yUxze1vk