And that is what the live vaccine is. That’s the current vaccine that’s being used.”

这就是活疫苗。 这就是目前使用的疫苗。

Protection from a live, attenuated vaccine typically outlasts that provided by a killed or inactivated vaccine.

减毒活疫苗的保护通常比灭活疫苗或灭活疫苗提供的保护更持久。

Only those with impaired immune systems would be at risk, but they're typically not given live vaccines.

只有免疫系统受损的人才会面临风险，但他们通常不会接种活疫苗。

However, they tend to provide a shorter length of protection than live vaccines, and are more likely to require boosters to create long-term immunity.

然而，它们往往提供比活疫苗更短的保护时间， 并且更有可能需要加强剂来产生长期免疫力。