Approach -1 : In the first one we have analysed the microbial Ist - Order growth kinetics where Exponential phase is most important. This sharp exponential phase is the main cause of virulent spreading of viral infection . Approach -2 : In the 2nd one we have reviewed the entire growth kinetics pattern to a more appropriate manner similar to Exponential – Gaussian F ( x ) relationship which points out the more prominent part of the short stationary phase or infinitesimally small linear relationship followed by sudden down to declining or recovery phase with a negative slope of linearity . It is also termed as Pseudo-Gaussian contour curve. Approach – 3 : In the 3rd one we will correlate the LCAO approach to Pharmacokinetic Phenomenon. The Remdesivir is approved as the most effective drug ( WHO ) – This drug Binds with Covid19 antigen SARS –COV -2 as compared to Sp Hybridised Drug – Antigen Linear overlap stabilising the complex. REFERENCE : 1. https://figshare.com/articles/MICROBIAL_GROWTH_KINETICS_A_MATHEMATICAL_REVIEW_SPECIAL_ADDENDUM_-_COVID19_/12280790 , JAYDIP DATTA , May ,11, 2020 . 2. https://osf.io/c6nmt/ , JAYDIP DATTA , May ,18 ,2020 . 3. https://