Before revision:  We then introduce a precise model of the RT-qPCR process , used to test for the presence of virus in a sample . We construct a statistical model for the viral load in a typical infected individual based on clinical data from Jones et. al. (2020).
After revision:  We then introduce a precise model of the RT-qPCR process , used to test for the presence of virus in a sample and construct a statistical model for the viral load in a typical infected individual based on clinical data from Jones et. al. (2020).