Many people do say that it does not exist but i have seen infections in my family so it is a real thing even i got sick with same symptoms but i opted not to get tested and after 2 weeks i was able to recover fully, i just took normal medicines.
Those who doesn't believe that coronovirus is real, are the type of people who'd belive in the flat earth theory. It's ridiculous and non-sensical.
I think they have no idea about the world so they are treating this epidemic as a fake like a virus. I see a lot of people around me getting infected and the rate of this infection has not been fully controlled yet everyone is relying on vaccines in that case it can never be fake.