COVID-19 is 5 times more deadly than the seasonal flue and spreads 3 times as fast and is a very fast acting virus but is weak outside the body. That is one of the reasons we need to keep washing our hands and being careful about touching our faces..
Past pandemics reacted to heat so they receded in hot times. It does not appears COVID-19 reacts this way.*
* Information from CSE course provided by American Rental Assocation