About 300,000 Kids Younger Than 5 Have Gotten a COVID VaccinationThat amounts to about 1.5% of the 19.5 million children younger than 5 in the United States. WebMD Health Newsadminjulio 9, 2022Uncategorized That amounts to about 1.5% of the 19.5 million children younger than 5 in the United States. WebMD Health News