Moderna’s COVID-19 vaccine is currently being examined Monday by technical experts because of potential WHO emergency usage list, a World Health Organization spokesman told Reuters.

“Moderna will be examined at the TAG (technical advisory group) meeting now,” WHO spokesman Christian Lindmeier said in response to some query. A determination on the U.S. drug maker’s vaccine has been expected in a couple of days, ” he said.

to date COVID-19 vaccines made by Pfizer, Astra Zeneca and Johnson and Johnson have received WHO endorsement, and it is an indication to federal regulatory authorities on an item’s safety and efficiency.