Some are saying 18 months.  Some say well over 2 years.

Dr. Anthony Fauci, a key member of the White House coronavirus task force, said in a new interview that he’s hopeful about blunting the rate of new infections into the summer but that the new coronavirus isn’t just going to “disappear” moving forward.

Source: Dr. Anthony Fauci: ‘I don’t think there’s a chance that this virus is just going to disappear’ – Washington Times