VYD2311 Vaccine for COVID-19

Inclusion Criteria: 1. Is a healthy adult male or female aged 18 to 49 years, inclusive, weighing at least 40 kg at the time of Screening 2. Has a body mass index (BMI) 18.0 to 32.0 mg/kg2, inclusive. 3. Is in good health, with no clinically significant abnormalities as determined by the Investigator based on medical history, physical exam, vital signs, and ECG per study site standard operating procedures. Exclusion Criteria: 1. Prior receipt of VYD2311 or pemivibart (VYD222). 2. Prior receipt of a COVID-19 vaccine within 6 months before Day 0 and prior receipt of a non-COVID-19 vaccine within 28 days before Day 0. 3. Prior receipt of convalescent plasma, a mAb to SARS-CoV-2 (other than VYD2311 or pemivibart), or IVIG within 6 months before Day 0. 4. Prior known or suspected SARS-CoV-2 infection within 6 months before Day 0. 5. Tests positive for current SARS-CoV-2 infection by RAT or local nucleic acid amplification test (eg, RT-PCR) on Day 0. 6. Exposure to someone with known or suspected SARS-CoV-2 infection in the 5 days before Day 0. 7. Is acutely ill, including symptoms suggestive of SARS-CoV-2 infection, in the opinion of the investigator or has a fever ≥38oC (≥100.4oF) within 14 days of Day 0. 8. Any chronic or significant medical condition that, in the opinion of the Investigator, might compromise participant safety or interfere with evaluation of the study drug or interpretation of participant safety or study results. NOTE: The above information is not intended to contain all considerations relevant to a participant's potential eligibility in the clinical trial.