By Manas Mishra (Reuters) -Advisers to the U.S. Centers for Disease Control and Prevention (CDC) on Thursday unanimously voted to recommend use of Moderna Inc’s COVID-19 vaccine for children and adolescents aged 6 to 17. CDC Director Rochelle Walensky is expected to sign off on the recommendations soon, which would allow the U.S. government to start rolling out the Moderna vaccine for these age groups. That would mean both mRNA COVID vaccines would be available to all Americans ages 6-months-old and up. The Pfizer-BioNTech vaccine, based on similar messenger RNA technology, has been available …