To be included in this study, each individual must satisfy all the following criteria:
Participants ≥ 65 years of age, or participants 12 through 64 years of age who have at least 1 underlying condition that puts them at increased risk for severe outcomes from COVID-19 at the time of study vaccination.
Previously vaccinated with a COVID-19 vaccine, with the last dose administered ≥ 90 days prior to study vaccination.
Participants must not be pregnant or breastfeeding. Participants of childbearing potential must have a negative highly sensitive pregnancy test at enrollment and must agree to use an effective method of contraception or remain abstinent from ≥ 4 weeks before study vaccination through ≥ 4 weeks after vaccination.
Known or suspected congenital or acquired immunodeficiency; receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the past 6 months; or long-term use of systemic corticosteroids.
History of virologically confirmed SARS-CoV-2 infection within 90 days before study vaccination.
Known systemic hypersensitivity to any component of the study intervention or a history of a life-threatening reaction to the study intervention or to a product containing the same substances.
Prior history of myocarditis, pericarditis, or myopericarditis.
Receipt of any vaccine within 28 days before study vaccination, except for influenza vaccine, which may be administered at least 14 days before study vaccination.
Receipt of an investigational or marketed COVID-19 vaccine within 90 days before study vaccination.
The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.