How long can China's zero-COVID policy last?

China's tough pandemic response likely saved a million deaths, but former CDC chief Tom Frieden believes the Chinese have two big problems now.

First, their vaccines don't work, he tells Ian Bremmer on GZERO World. And second, hesitancy rates — especially among the elderly — remain high.

So, what should China do now? Get better vaccines to the most vulnerable, and accept "almost" zero-COVID, like Singapore.

If the Chinese can test cities of more than 10 million people in a few days, Frieden says distributing effective jabs to those who need them "is certainly within their grasp."

Watch the GZERO World episode: How depoliticizing the US health response will save lives (COVID isn't over)