The U.S. drug regulator on Monday expanded the use of a third shot of Pfizer Inc.'s coronavirus vaccine to children aged 12 to 15 and also shortened the wait time for a booster shot from six to five months.The amended emergency-use authorization means that Pfizer's single booster dose is now approved for individuals 12 years of age and older in the United States, where the highly transmissible Omicron variant of the virus is spreading rapidly.The latest decision came after the U.S. Food and Drug Administration reviewed data from Israel, including safety data from more than 6,300 individuals…READ FULL ARTICLE