Why is Delta such a worry? It's more infectious, probably causes more severe disease, and challenges our vaccines

While Australians may be focused on the havoc the Delta variant is wreaking on our shores, Delta is in fact driving waves of COVID infections all around the world.

With the World Health Organization (WHO) warning Delta will rapidly become the dominant strain, let’s take a look at this variant in a global…

© La Conversation - lundi 5 juillet 2021