Abstract
Covid-19 is a disease which has become pandemic because of transmission of the tiny, single stranded virus, called SARS-CoV-2 or SARS-2. It has infected so far 168 million people with a death toll of 3.6 million in 210 countries. The world has seen worse pandemics but this COVID 19 is the most widespread in the human history quite probably due to the global travels.
 A few vaccines for this disease is still in different stages of trial and acceptance and there are only three ways of prevention: 1. Avoiding crowds, 2. Wearing a mask when you go out and 3 Keeping hands clean. 
 The contents presented in this article are the innovations that employ light as the fourth dimension of corona prevention and therapy. One can use UVC (at 222 nm from an excimer lamp or LED or the fourth harmonic of Nd YAG laser at 266nm) for direct irradiation on oral cavity; or visible light (450 nm from blue LED or white light from a handy mobile) for photodynamic action with curcumin (of common house hold turmeric) as the photo sensitizer. Both could work as therapeutic tools of significant potency.
Highlights
A variety of diseases are caused by the microorganism such as mold, spore, fungi, bacteria and viruses, with the last two in the lower rungs of the ladder
All the above are based on two essential concepts: that substantial number of viral population are available on the surface, outside the cells, so that the photons can hit them hard and decimate them and reduce their population; and third that there is a threshold viral population for the onset of disease and that ultraviolet photons need to bring the viral load below this threshold
This, by itself is a very valuable direct advantage; what additional advantage is the reduction in the atherosclerosis in the blood vessels, which reduces ACE2 receptor, which in turn reduces the chances of getting infected by SARS CoV-2 [7,8]
Summary
A variety of diseases are caused by the microorganism such as mold, spore, fungi, bacteria and viruses, with the last two in the lower rungs of the ladder. All the above are based on two essential concepts: that substantial number of viral population are available on the surface , outside the cells , (before being “ushered in” by the ACE2 receptor and when they migrate out of first host and in search of the ) so that the photons can hit them hard and decimate them and reduce their population; and third that there is a threshold viral population for the onset of disease and that ultraviolet photons need to bring the viral load below this threshold All these are reasonable expectations and realizable objectives [15,16]. Interaction between the invading Corona Virus and the epithelial cell of upper and lower respiratory track maybe summed up again This single stranded RNA virus makes use of its spike protein of the virus to lock with ACE2 receptor enzyme and gains entry into the cell.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
