Vaccines don't 'heal' the economy per se, but it prevents the population from contracting covid-19, and it's the people in the country that keep the economy working, when the virus broke out early last year and lockdowns were imposed, workers had to stay at home, quite a lot of businesses had to shut down, most economies went comatose as a result of that; so now, if vaccines can be effective, and prevent people from contracting the virus, then all the nations workforce can get back to actively working without the fear of contracting the virus, and that by extension will 'heal' the economy in time to come.