CDC panel recommends updated COVID vaccine for everyone over 6 months old.
Experts emphasize vaccine benefits for all age groups.
Over 96% of those over 16 have some antibody protection.
Immunity wanes after 3-6 months, varies with age.
Updated vaccine may prevent infection.
Contention on vaccinating children; some experts advocate for it.
Rare risk of myocarditis with vaccines, more pronounced in young men.
Risk lower with vaccine than COVID infection.
Scheduling doses closely may increase myocarditis risk.
CDC suggests waiting between vaccine doses for optimal safety.