更多详情，在英文的论文中：

102只猫是2020年1月-3月从武汉动物与宠物保护场所收集采样。 

39只猫的血清，是病毒所在2019年3月-5月间从武汉本地提取保存在自已的血清库中。

https://www.biorxiv.org/content/10.1101/2020.04.01.021196v1.full


A total of 102 cats were sampled from animal shelters or pet hospitals of Wuhan between Jan. and Mar., 2020.

....

A set of 39 cat sera were retrieved from the serum bank in our lab, which were collected from Wuhan between Mar. and May, 2019.