Study: NCT05049226

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) full dose
Description: Astrazeneca COVID-19 (ChAdOx1 AZD1222) vaccine:~One dose (0.5 ml) contains: COVID-19 Vaccine (ChAdOx1-S\* recombinant) 5 × 10\^10 viral particles (vp)~\*Recombinant, replication-deficient chimpanzee adenovirus vector encoding the SARS-CoV-2 Spike glycoprotein. Produced in genetically modified human embryonic kidney (HEK) 293 cells.~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) full dose
Description: Astrazeneca COVID-19 (ChAdOx1 AZD1222) vaccine:~One dose (0.5 ml) contains: COVID-19 Vaccine (ChAdOx1-S\* recombinant) 5 × 10\^10 viral particles (vp)~\*Recombinant, replication-deficient chimpanzee adenovirus vector encoding the SARS-CoV-2 Spike glycoprotein. Produced in genetically modified human embryonic kidney (HEK) 293 cells.~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) full dose
Description: Astrazeneca COVID-19 (ChAdOx1 AZD1222) vaccine:~One dose (0.5 ml) contains: COVID-19 Vaccine (ChAdOx1-S\* recombinant) 5 × 10\^10 viral particles (vp)~\*Recombinant, replication-deficient chimpanzee adenovirus vector encoding the SARS-CoV-2 Spike glycoprotein. Produced in genetically modified human embryonic kidney (HEK) 293 cells.~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: Pfizer/BioNTech BNT162b2 vaccine (PF) full dose
Description: Pfizer-BioNTech COVID-19 (BNT162b2) vaccine:~Diluent: 0.9% sodium chloride (normal saline, preservative-free)~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: Pfizer/BioNTech BNT162b2 vaccine (PF) full dose
Description: Pfizer-BioNTech COVID-19 (BNT162b2) vaccine:~Diluent: 0.9% sodium chloride (normal saline, preservative-free)~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: Pfizer/BioNTech BNT162b2 vaccine (PF) full dose
Description: Pfizer-BioNTech COVID-19 (BNT162b2) vaccine:~Diluent: 0.9% sodium chloride (normal saline, preservative-free)~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) half dose
Description: Astrazeneca COVID-19 (ChAdOx1 AZD1222) vaccine:~One dose (0.5 ml) contains: COVID-19 Vaccine (ChAdOx1-S\* recombinant) 5 × 10\^10 viral particles (vp)~\*Recombinant, replication-deficient chimpanzee adenovirus vector encoding the SARS-CoV-2 Spike glycoprotein. Produced in genetically modified human embryonic kidney (HEK) 293 cells.~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) half dose
Description: Astrazeneca COVID-19 (ChAdOx1 AZD1222) vaccine:~One dose (0.5 ml) contains: COVID-19 Vaccine (ChAdOx1-S\* recombinant) 5 × 10\^10 viral particles (vp)~\*Recombinant, replication-deficient chimpanzee adenovirus vector encoding the SARS-CoV-2 Spike glycoprotein. Produced in genetically modified human embryonic kidney (HEK) 293 cells.~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) half dose
Description: Astrazeneca COVID-19 (ChAdOx1 AZD1222) vaccine:~One dose (0.5 ml) contains: COVID-19 Vaccine (ChAdOx1-S\* recombinant) 5 × 10\^10 viral particles (vp)~\*Recombinant, replication-deficient chimpanzee adenovirus vector encoding the SARS-CoV-2 Spike glycoprotein. Produced in genetically modified human embryonic kidney (HEK) 293 cells.~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: Pfizer/BioNTech BNT162b2 vaccine (PF) half dose
Description: Pfizer-BioNTech COVID-19 (BNT162b2) vaccine:~Diluent: 0.9% sodium chloride (normal saline, preservative-free)~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: Pfizer/BioNTech BNT162b2 vaccine (PF) half dose
Description: Pfizer-BioNTech COVID-19 (BNT162b2) vaccine:~Diluent: 0.9% sodium chloride (normal saline, preservative-free)~Administer: Intramuscular (IM) injection in the deltoid muscle

Intervention type: BIOLOGICAL
Group type: EXPERIMENTAL
Intervention: Pfizer/BioNTech BNT162b2 vaccine (PF) half dose
Description: Pfizer-BioNTech COVID-19 (BNT162b2) vaccine:~Diluent: 0.9% sodium chloride (normal saline, preservative-free)~Administer: Intramuscular (IM) injection in the deltoid muscle