21 November 2017 / Accepted: 8 January 2018 Wuhan Institute of Virology

 As a control, we also collected 240 serum samples from random blood donors in 2015 in Wuhan, Hubei Province more than 1000 km away from Jinning (Fig. 1A) and where inhabitants have a much lower likelihood of contact with bats due to its urban setting.   None of the donors had knowledge of prior SARS infectionor known contact with SARS patients.

Serological Evidence of Bat SARS-Related Coronavirus Infection
in Humans, China

https://www.ecohealthalliance.org/wp-content/uploads/2018/03/Virologica-Sinica-SARSr.pdf