The Indiana Department of Health is letting vaccine providers know they can start giving booster shots of Pfizer's pediatric vaccine.
Experts say technically a fourth dose is already available for people who have a compromised immune system.
The U.S. Food and Drug Administration (FDA) is holding a virtual meeting on April 6 to discuss future COVID-19 boosters, announced on Monday.
Until Wednesday, Kentucky was following guidance from the U.S. Centers for Disease Control and Prevention.
Big news about COVID-19 vaccine boosters leads to lots of confusion and questions, so WDRB News went straight to one of the White House's top doctors to get some answers.
The single booster dose can be administered at least six months after completion of the second dose and applies only to individuals who previously received the Pfizer vaccine.
The company hopes to have it rolled out by this fall, according to its CEO Stephane Bancel. Clinical data on a booster shot could come in May.
The CEO of Pfizer said that while real-world data is showing protection provided by the company's vaccine goes down over time, it was still extremely high after six months.