I don't know if COVID has been patented but if it has...
https://www.brighteon.com/be1cd468-ae7e-44fc-a54f-5a23bca1ee6a
Towards the end of this video they speak about Ebola being patented. But you cannot patent something that is natural. They wonder how that works.
My understanding is that if a disease has been manufactured in a lab can it be patented.