[The stream is slated to start at 12 p.m. ET. Please refresh the page if you do not see a player above at that time.]

A key advisory group from the Centers for Disease Control and Prevention will meet on Thursday to discuss and vote on who exactly should receive a booster of the Covid-19 vaccine from Pfizer and BioNTech.

The meeting comes the day after the Food and Drug Administration approves emergency approval for Pfizer injections to be given to the elderly and adults with conditions that pose a risk of serious illness or serious complications from frequent exposure to the virus.

The agency also added people between the ages of 18 and 64 “whose frequent institutional or professional exposure” to the virus puts them at high risk of developing Covid. This leaves enough room for the CDC panel to potentially recommend third doses for people in nursing homes, prisons, frontline health workers, and other key workers who were among the first Americans to receive their first shots in December.

If the CDC adopts this plan on Thursday, the booster shots could begin immediately.