good to see you again. in a recent piece for the "washington post," you called it a triple threat. explain what you mean by that. why is it a triple threat? >> thanks, eamon, for having me back. any time you want to look at the variant, you want to look at lee characteristics. you ask the question, is it more contagious? the delta variant is way more contagious. the second question, is it more deadly if you catch it? the answer is it probably is more deadly. and the third question, does it cause more breakthrough infections? what we're learning about the delta variant, if you're fully vaccinated, you're actually pretty protected. even if you're just partially protected, say, one shot of the pfizer vaccine, you may get it. this is the most powerful variant we've seen. >> you heard and what the