This episode discusses four MMWR reports: two about COVID-19 and two related to lead and other metal exposures in honor of National Lead Poisoning Prevention Week. The first report describes ACIP recommendations for additional primary doses and booster doses of COVID-19 vaccine. The second report looks at infection-induced immunity versus vaccine-induced immunity. The third report examines blood lead levels in children. And the last report explores toxic metals found in some decorative luster dusts used in baking.