Reassessment of New Normal Along with Its Typical Measures Against Covid-19 via an Optimal Decision Framework

Challenges set by COVID-19 in terms of deadliness, propagation speed, and gained immunity remain unprecedented. As the vaccine production races against virus mutations, international communities are settling toward the new normal guided by local government and health authorities. This study asks how well
such transition has been applied in Germany by assessing the functionality of typical measures against the disease. We propose a mathematical model to govern mechanistic processes behind the epidemics. The analysis focuses on to what extent face mask, its efficacy, and community awareness in the likelihood of enhancing physical distancing may significantly suppress the incidence in the long run. Focusing on reemerging peaks of outbreaks during winter season, our sensitivity analysis and optimal decision framework recommend that guaranteeing the locals to uphold physical distancing during the festive season (beginning of November to the end of December) is urgent and effective in reducing the inflow of new cases.