The plus for PET is that even if coronarviris causes revenue to...

The plus for PET is that even if coronarviris causes revenue to fall short of the company forecasts in 2020 yet again, the company has the cash to come out the other side and prosper. What impact the virus will have on sales in the short term is unknown, but the company will continue to exist. What you do not want to own at present are heavily indebted companies, or loss making companies that will need to raise money to keep operating. PET has a healthy balance sheet and will survive even if sales are delayed.The share price may fall further, as companies with market caps that are a multiple of revenue are suffering as PET is.

The short term does not matter as PET can survive and will prosper when this is over. That is something that might not have been true several years ago.