The U.S. Food and Drug Administration approved the single-dose COVID-19 vaccine by Johnson & Johnson on Saturday.
The green light brings to three the number of vaccines available to fight the deadly coronavirus.
Approval came one day after another expert advice panel signed the new vaccine.
The single dose was found to have 85% protection against the most serious COVID-19 disease, in a massive study.
Vaccine shipments can begin as early as Monday.
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