美国有专家认为，接种者反而有助于传播新冠变异病毒德尔塔毒株。证据是：More than half of Scotland is fully vaccinated, and 71% of Scots have received at least one dose of a vaccine. But the country is suffering its worst wave of infections.

A leading US disease expert says there's 'no doubt in my mind' that vaccinated people are helping spread Delta

A leading US disease expert says there's 'no doubt in …

https://www.msn.com/en-au/news/world/a-leading-us...