PCR-test cannot be used to diagnose Covid (or any other viral) infections

Ai, T., Yang, Z., Hou, H., Zhan, C., Chen, C., Lv, W., Tao, Q., Sun, Z., & Xia, L. (2020). Correlation of Chest CT and RT-PCR Testing for Coronavirus Disease 2019 (COVID-19) in China: A Report of 1014 Cases. Radiology. https://doi.org/10.1148/radiol.2020200642 Xie, X., Zhong, Z., Zhao, W...