life threatening to human beings. i don t life threatening to human beings. i don t know life threatening to human beings. i don t know that it s going to be a straight don t know that it s going to be a straight line. and certainly there lots of straight line. and certainly there lots of people morning about the prospect lots of people morning about the prospect of more infectious and more virutent prospect of more infectious and more virulent strains present look at the delta virulent strains present look at the delta strain for example, both more infectious delta strain for example, both more infectious and causes higher rates of hospitalisation than the original period of hospitalisation than the original period of of hospitalisation than the original period of covid or the alpha variant of covid period of covid or the alpha variant of covid. there may be more to come like that and of covid. there may be more to come like that and that s why scientists are workin