Study: NCT04869592

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of low-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell)
Description: Intramuscular injection of high-dose Recombinant SARS-CoV-2 Vaccine (CHO cell) in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: PLACEBO_COMPARATOR
Intervention: placebo
Description: Intramuscular injection of placebo in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: PLACEBO_COMPARATOR
Intervention: placebo
Description: Intramuscular injection of placebo in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: PLACEBO_COMPARATOR
Intervention: placebo
Description: Intramuscular injection of placebo in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: PLACEBO_COMPARATOR
Intervention: placebo
Description: Intramuscular injection of placebo in the deltoid muscle of the upper arm

Intervention type: BIOLOGICAL
Group type: PLACEBO_COMPARATOR
Intervention: placebo
Description: Intramuscular injection of placebo in the deltoid muscle of the upper arm