Moderna Inc is adding two new production lines at its COVID-19 vaccine manufacturing plant in Massachusetts, in a bid to prepare for making more booster shots, the Wall Street Journal reported on Monday.

The additions will help Moderna increase overall production capacity by 50% at the plant, the report said citing company officials.

Moderna did not immediately respond to a Reuters request for comment.

(Reporting by Mrinalika Roy in Bengaluru; Editing by Shinjini Ganguli) ((mrinalika.roy@thomsonreuters.com; within U.S. +1 646 223 8780, outside U.S. +91 806749 8325;))