A total of 18 people in North Carolina reported side effects, while 11 people in Colorado reacted to the shot with symptoms ranging from dizziness, nausea and fainting, according to media reports.
Developed by Janssen, the pharmaceutical arm of Johnson & Johnson, it is the fourth vaccine the EU has granted conditional marketing authorization, after those of BioNTech-Pfizer, Moderna, and AstraZeneca.
Johnson & Johnson’s COVID-19 vaccine was approved for emergency use on February 27. It is the first single-dose vaccine authorised in the United States.
It is the third COVID-19 vaccine that has received the FDA’s emergency use authorisation in the country after Pfizer and Moderna.