周二英国称到访过意大利北部的人回国后应该自我隔离。请看本报昨日的报道：

Britain said Tuesday that people who had visited northern Italy should self-isolate if they had any flu-like symptoms after Europe’s worst outbreak of coronavirus so far flared up in the regions of Lombardy and Veneto.

“Those who have been to northern Italy — that is essentially anybody who has been to Italy north of Pisa — should, if they have flu-like symptoms, self isolate,” Health Secretary Matt Hancock said.

报道中的flare up就是“爆发”的意思。这个词本意是“燃烧起来”，引申为“爆发、变得严重”。例如：

My arthritis flares up during the damp weather.

因为天气潮湿，我的关节炎加重了。