Jan 3 (Reuters) - A U.S. Centers for Disease Control and Prevention advisory panel is set to meet on Wednesday to discuss the use of a booster dose of Pfizer and BioNTech's COVID-19 vaccine for children aged 12 to 15 years, according to the agency's website https://www.cdc.gov/vaccines/acip/index.html. (Reporting by Manojna Maddipatla in Bengaluru; Editing by Ramakrishnan M.)