Hong Kong and Ulaanbaatar, Mongolia (CNN)In Mongolia, hospitals are overwhelmed. In the tiny archipelago of Seychelles, more than 100 new Covid-19 cases are being reported each day. And in Chile, a nationwide lockdown was lifted this week -- but the country is still reporting thousands of daily cases.
What links these countries is that they have each fully inoculated more than 50% of their populations, largely with Chinese-made coronavirus vaccines. And that's raised questions over the vaccines' efficacy.
If the Chinese vaccines aren't working, that's a huge problem -- and not just from a health perspective. Beijing has staked its reputation on providing other countries with vaccines.
