Upgrade Social Distancing into "Airflow Inaccessible Distancing" Code Validated by E. coli DH5? Spray Viable Colony Counting Simulation and the Technical Validation of COVID-19 Airborne Infection UV Quarantine? Devices

While global attentions focus on COVID-19 immunological solutions, we believe a future possible vaccine will unexceptionally compromise to immunosenescence which will leave those older than 55 years of age inactive to any immobilization. We then validate the UV quarantine? system that shielding the UV hurt instead of segregating the contagious agents in an environment validated by 106 cell/ml E.coli DH5? spray viable colony simulation. Various experimental designs reveal that the social distancing rule should be upgraded to the "Airflow Inaccessible Distancing" code due to the undetectable small-sized infectious aerosols, saturationsecondary infection from various filtering devices and quarantine spaces, and the mixing efficiency of conventional chemical sanitizers. The new code and its integrated COVID-19 Airborne Infection UV quarantine? Devices are globally the highest-efficiency systems for blocking COVID-19 from spreading under general social conditions.Portable UVC 253.7nm meters can release the safety concerns for public self-made or commercially available devices. Meanwhile, an acrylic system and relevant methods are developed to validate the performance of UV quarantine? devices and conventional masks under real applications. Also, a 33 % placebo infection rate is suggested as theminimum requirement for Phase 3 clinical trials of all medical devices, vaccines, or drugs intended for COVID-19 due to the existence of human respiratory rhymeand the weakness of nasal turbinates in blocking infection transmission via body HuNAb increase. And base on such a placebo infection rate, it is recommended to use intervention with over 99% block efficiency that equivalent to a lockdown to control the pandemic at the population level.