Study: NCT06602531

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: ARCT-2304
Description: Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: ACTIVE_COMPARATOR
Intervention: Control vaccine younger adults
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: ACTIVE_COMPARATOR
Intervention: Control vaccine younger adults
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: ACTIVE_COMPARATOR
Intervention: Control vaccine older adults
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

Intervention type: BIOLOGICAL
Group type: ACTIVE_COMPARATOR
Intervention: Control vaccine older adults
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Placebo Vaccine
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Placebo Vaccine
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Placebo Vaccine
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Placebo Vaccine
Description: Each participant will receive one intramuscular (IM) dose into the deltoid muscle.