Until now, the Pfizer and Moderna vaccines have targeted the virus's original strain.

到目前为止，辉瑞和莫德纳疫苗都是针对病毒的原始毒株。

This is less to do with any new virus strains or you know mutations of the virus.

这与任何新的病毒株或你知道病毒的突变关系不大。

The monkeypox virus strain that has emerged across the world in recent weeks may be evolving at an abnormally fast rate — making it more infectious than previous versions of the virus.

最近几周在世界各地出现的猴痘病毒毒株可能以异常速度快速进化，使其比以前的病毒更具传染性。

The vaccines currently being given still offer strong protection against severe disease and death, but they target the virus strain that spread in early 2020 and no longer protect nearly as well against infection.

目前接种的疫苗仍然对严重疾病和死亡提供了强有力的保护，但它们针对的是在2020年初传播的病毒株，不再具有抵御感染的能力。