translation.en: But, before we get too confident, we'd better look at some of those other countries, and make sure that this organism doesn't just always evolve toward mildness.
translation.zh: 但在我们变得过于自信之前，我们最好看看其他一些国家的情况。 并确认这一病菌并不总是朝着更温和的方向进化。