Why Covid-19 outbreaks in countries using Chinese vaccines don't necessarily mean the shots have failed

Why Covid-19 outbreaks in countries using Chinese vaccines don’t necessarily mean the shots have failed Published by CNN on Sat, 03 Jul 2021 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.