Besides the visual heuristic side, our research of the Corona Virus Problem includes the line of physics considerations and the equational line. The present work is merely devoted to the latter line. It appears that some proposed special covering of some of the Corona Virus molecules, which is purposed to cause an antagonism between these molecules and those uncovered, leads to turning a nonlinear balance equation into a linear time-variant one (which the physicists sometime call "parametric equation").
