area. and 81% of the country is vaccinated with at least one dose. >> we in the united states are going from a period of hiding from the virus to now living with the virus. we're doing this because we have immunity from vaccines and prior infection, and we have the pfizer pill. >> reporter: will there be another variant? >> i literally look daily at the across the globe in a database, and i will tell you the virus is think whiching as we speak. but it really is luck of the draw. >> reporter: what would you say tops the list of the lessons learned. >> we are concommunity. it matters not just what you do but what your friend does, what your neighbor does, what other countries do. >> reporter: and part of that, dr. agus says, is making sure the rest of the world is vaccinated, because those gaps, those places that are lagging in vaccinations is where new variant could pop up. adriana. >> diaz: lilia, thank you so much. strapt ahead on the "cbs weekend news," one city finds an innovative way to house homeless veterans. also, with a deep sea discovery,