Covid-19 vaccinations for children younger than 5 are beginning June 21 across the United States, marking a milestone in the nation's fight against the disease.
Mandatory Credit: Sean Rayford/AP
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Covid-19 vaccinations begin for US children under 5
Dr. Sarah Schaffer DeRoo described in one word how she felt after getting her 7-month-old son vaccinated against Covid-19: thrilled.
