Experts attribute the new surge to the inability to effectively track and trace contacts.

专家将这种新的激增归因于无法有效地追踪和确定接触者。

The city's public schools said that it cannot access a database that tracks attendance and emergency contacts.

该市的公立学校表示，他们无法访问记录出勤情况和紧急情况联系人的数据库。

Countermeasures such as isolating the sick and tracking contacts of those infected have been hard to establish in countries where Ebola was unknown until this outbreak.

如隔离病人及对感染者追踪等的应对措施在这些埃博拉疫情才为人所知的国家一直并没有用武之地。

China set up a network of fever hospitals where people could go to be tested, and was quick to isolate confirmed cases and track their close contacts to find the origins of infection clusters.

中国建立了发热门诊就医网络，迅速隔离确诊病例， 追踪密切接触者， 寻找聚集性感染源。