and as you get further and further away from the country of origin, countries are harder hit. why is that? is there some sort of little precursor immunity that is circulating in a country of origin we are learning about? i don't know. there is a lot of lessons here that we can apply now but also for possible future pandemics. >> and you also -- there is a lot of sort of takeaways for people in the book. you write about the microbiome, which i have been lately obsessed with, and work/life balance. sanjay, very excited about the work. "world war c: lessons from the covid-19 pandemic and how to prepare for the next one." it's out tomorrow. it's going to be everywhere. look forward to it. sanjay, thanks. next, what life is like for women under the taliban regime. is the taliban keeping any promises to respect women's rights in clarissa ward is on the ground in kabul. her exclusive report next. match is this for real? yup! we match all the cash back new card members earn at the end of their first year automatically