Health authorities are quite concerned about it, because anything that is more easily transmissible than delta would put a severe dent in our plans to sot of re emerge globally from the pendemic. Once you detect them, it's probably too late, and it's already in a commune in its spreading pretty wildly. We do have vaccines, and we are going to get drugs soon. They're widely available, they're easy to take, that appear to still have some significant effecton this variant. But on vacines unfortunately, it's still too early to say.