Overnight Health Care: Biden says US will have enough vaccine for all adults by end of May | Biden calls on all states to vaccinate teachers by the end of March | Texas, Mississippi lift mask mandates | The Hill: Healthcare Policy

Welcome to Tuesday's Overnight Health Care.  Dolly Parton, who notably contributed $1 million towards Moderna's COVID vaccine, finally got her first shot today. Even though she's 75 years old, she wanted to wait so it didn't seem like she was...