Children, who rarely have severe symptoms, have not yet been tested for any experimental coronavirus vaccine. The CDC said so far early clinical trials have only included non-pregnant adults, noting the recommended groups could change in the future as clinical trials expand to recruit more people.
Pfizer has said it will enrol children, who are capable of passing on the virus to high-risk groups, as young as 12 in its large, late-stage Covid-19 vaccine trial, while AstraZeneca has said a sub-group of patients in a large trial will test children between five to 12.
The CDC also said on Wednesday that any coronavirus vaccine would, at least at first, be used under the Food and Drug Administration’s emergency use authorisation, and that there could be a limited supply of vaccines before the end of 2020.
In case of limited supply, some groups may be recommended to get a vaccine first, the CDC said.
Coronavirus vaccines should be rolled out in four phases, with initial supply going to front-line health workers and first responders, an independent expert panel tapped by top US health officials recommended earlier this month.