Secondly, the previous estimate based primarily on national case reports, sentinel surveillance and local survey data.

其次，以往估计主要依据全国病例报告、哨点监测和局部调查数据。

youdao

Secondly, the previous estimate based primarily on national case reports, sentinel surveillance and local survey data.

其次，以往估计主要依据全国病例报告、哨点监测和局部调查数据。

youdao