Yes cases have gone down and so have the masks but it is totally okay to be cautious. The pandemic is a part of our lives right now but it's still here. And according to former White House COVID-19 Coordinator Dr. Deborah Birx, the U.S. should get ready for a surge of COVID this summer.
We've already been hearing of news reports that cases are increasing again in certain parts of the world, and even here in the states. And we all know pandemics have no borders so it only makes sense that the thing will make "a return" to the U.S. at some point in an impactful way.
So continue to take caution, do what you know is right to help prevent getting yourself and others sick.