There are growing signs that parts of the country may be close to meeting demand for the coronavirus vaccine — well before the U.S. has reached herd immunity.

Why it matters: For the last few months, the primary focus of the U.S. has been getting shots to everyone who wants them, as quickly as possible. Soon, that focus will abruptly shift to convincing holdouts to get vaccinated.

State of play: Red states in the South are administering the lowest portion of the vaccine doses that they receive from the federal government — a sign of low demand, slow public health systems, or both.