yet, it is thought nearly half the population was infected, boosting herd immunity. china, by, you know, learning from the mistakes that hong kong have made, they will be upscaling the vaccination, especially among the elderly. on the mainland, officials say the vaccine booster rate for those over 80 is at only 19.7%. one 85—year—old tells us she and her husband have only just been vaccinated. translation: i'm not worried. we just need to be careful. - translation: chinese people do what they are told. - they listen to the government. yet it's hard for the party to shift when it's making political mileage attacking other countries for sacrificing lives by opening up. translation: if we chose to lay down now, our efforts _ will have come to nothing. we unswervingly insist on zero covid.