1. The government works to isolate sick patients amid travel by millions of people

making visits for the Chinese New Year holiday. 请问amid travel是作状语，by millions of people修饰travel，making visits for the Chinese New Year holiday修饰people吗？政府在数以千万的人们进行新年假期旅行的时候隔离感染的病人。 

2. The authorities have banned group tours out of the city and ordered vehicles checked for live animals. 不理解checked for. order sb to fo sth, 我觉得应该是ordered vehicles to be checked for live animals.