I think, the world will need a lot of time to recover all damage covid-19 caused to it. The most damaged thing is economy. Now we spending a lot of money on medical supplies and masks. When quarantine ends, all people will go out to bars, parksschoolsss etc. But if there will be a lot of people contact to each other, then new virus can appear to the world. Another problem is travelling. I think all airports will be closed for some time, to warn the another virus.