Pfizer’s 3-Dose Vaccine , 80 Effective Against Omicron, Infection for Youngest Children.br ABC News reports new data shows br Pfizer's 3-dose vaccine is 80 effective against omicron infections in children br five years old and younger.br In all age groups, Pfizer's coronavirus br vaccine has been less effective against br mild breakthrough infections.br but has been shown to offer high protection against severe disease and death.br Experts say Pfizer's announcement offers reassurance to parents who wish to protect their children against coronavirus.br We are pleased that our formulation for the youngest children, which we carefully selected to be one-tenth of br the dose strength for adults ... , statement from Albert Bourla, chairman CEO Pfizer, via ABC News.br ... was well tolerated br and produced a strong immune response. , statement from Albert Bourla, chairman CEO Pfizer, via ABC News.br After two years without a vaccine for young children, many pediatricians and parents intend to vaccinate as soon as possible.br However, recent polls have shown over 50 of parents feel they need more information before their children receive a COVID-19 shot.br Parents should also be br aware that this preliminary br data will be supplemented by additional data in June ... , Dr. Alok Patel, pediatric hospitalist Stanford Children's Health, via ABC News.br ... which will then be br thoroughly reviewed by br both the FDA and the CDC. , Dr.