The cure to COVID-19 would not spark interest in bitcoin but rather on pharmaceutical companies behind the concoction/vaccine. For months we have been telling here in this very forum that it's not only bitcoin that is affected by the pandemic but rather the whole economic scene of the world. Also, even if the world gets COVID-free before 2020 ends, most of the countries would be busy rebuilding their fragile economies and repaying debts that they used to combat the virus and by giving aid to the public. Someone has to pay that debt, and it's certain that the repairs for the economy would focus more on the domestic and international affairs and bitcoin would just sit in the corner because that is the least of the priorities of people by then.