With the CDC's approval of booster shots for many Americans, there were lines again to get a shot.

The CDC approved boosters for Moderna and Johnson & Johnon and said it's okay to "mix and match."

KMBC talked to Dr. Sarah Boyd, infectious disease physician on Saint Luke's COVID-19 Response Team, about who is eligible to get a booster shot.

Dr. Boyd explains what it means to "mix and match" following the CDC's decision.