Tests of V920 in the outbreak area helped stop the epidemic.

V920在爆发地区的测试有助于阻止流行病。

Many countries have been affected, and there are numerous cases of community spread, meaning that individuals are getting sick without being around any sick contacts or having traveled to outbreak areas.

许多国家都受到疫情影响，其中不少病例属社区传播，即他们并无疫情爆发地区旅行史，也无受感染者接触史。

Many countries have been affected, and there are numerous cases of community spread, meaning that individuals are getting sick without being around any sick contacts or without having traveled to outbreak areas.

许多国家都受到疫情影响，其中很多病例为社区传播，即他们并无疫情暴发地区旅行史，也无受感染者接触史。