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Delayed Heterologous SARS-CoV-2 Vaccine Dosing (Boost) After Receipt of EUA Vaccines

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ClinicalTrials.gov Identifier: NCT04889209
Recruitment Status : Recruiting
First Posted : May 17, 2021
Last Update Posted : September 24, 2021
Sponsor:
Information provided by (Responsible Party):
National Institute of Allergy and Infectious Diseases (NIAID)

Brief Summary:

A phase 1/2, open-label clinical trial in individuals, 18 years of age and older, who are in good health, have no known history of Coronavirus Disease 2019 (COVID-19) or Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection, and meet all other eligibility criteria. This clinical trial is designed to assess the safety, reactogenicity and immunogenicity of a delayed (>/=12 weeks) vaccine boost on a range of Emergency Use Authorization (EUA)-dosed COVID-19 vaccines (mRNA-1273, and mRNA-1273.211 manufactured by ModernaTX, Inc.; BNT162b2 manufactured by Pfizer/BioNTech; or Ad26.COV2.S manufactured by Janssen Pharmaceuticals/Johnson & Johnson). This is an adaptive design and may add arms (and increase sample size) as vaccines are awarded EUA and/or variant lineage spike vaccines are manufactured or become available. Enrollment will occur at up to twelve domestic clinical research sites.

This study includes two cohorts. Cohort 1 will include approximately 550 individuals (50 subjects/group; Groups 1E-11E) greater than 18 years of age and older, stratified into two age strata (18-55 years and >/=56 years) who previously received COVID-19 vaccine at Emergency Use Authorization dosing (EUA) (two vaccinations of mRNA-1273 at the 100 mcg dose, two vaccinations of mRNA-BNT162b2 at the 30 mcg dose, or one vaccination of Ad26.COV2.S at the 5x10^10 vp dose). Those subjects will be offered enrollment into this study >/=12 weeks after they received the last dose of their EUA vaccine. Subjects will receive a single open-label intramuscular (IM) injection of the designated delayed booster vaccine and will be followed through 12 months after vaccination: 1) Group 1E - previously EUA-dosed vaccination with Janssen - Ad26.COV.2.S at 5x10^10 vp followed by a 100-mcg dose of mRNA-1273, Group 4E - previously EUA-dosed vaccination with Janssen - Ad26.COV.2.S at 5x10^10 vp followed by a 5x10^10 vp dose of Ad26.COV2.S, Group 7E - previously EUA-dosed vaccination with Janssen - Ad26.COV.2.S 5x10^10 vp followed by a 30-mcg dose of BNT162b2, Group 10E - previously EUA-dosed vaccination with Janssen - Ad26.COV2-S 5x10^10 vp followed by a 100-mcg dose of mRNA-1273.211; 2) Group 2E - previously EUA-dosed vaccination with Moderna - mRNA-1273 at 100 mcg for two doses followed by a 100-mcg dose of mRNA-1273, Group 5E - previously EUA-dosed vaccination with Moderna - mRNA-1273 at 100 mcg for two doses followed by a 5x10^10 vp dose of Ad26.COV2.S, Group 8E - previously EUA-dosed vaccination with Moderna - mRNA-1273 at 100 mcg for two doses followed by a 30-mcg dose of BNT162b2; 3) Group 3E - previously EUA-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses followed by a 100-mcg dose of mRNA-1273. Group 6E - previously EUA-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses followed by a 5x10^10 vp dose of Ad26.COV2.S, Group 9E - previously EUA-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses followed by a 30-mcg dose of BNT162b2, Group 11E - previously EUA-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses followed by a 100-mcg dose of mRNA-1273.211.

A telephone visit will occur one week after each primary EUA vaccination and one week after the booster dose. In person follow-up visits will occur on 14 days following completion of EUA vaccinations and on days 14, and 28 days after the booster dose, as well as 3, 6, and 12 months post the booster vaccination. Additional pools of subjects can be included if needed as additional COVID-19 vaccines are awarded EUA.

New groups may be added to Cohort 1 or 2 dependent upon manufacture of variant lineage spike protein-based vaccine constructs or vaccines newly awarded EUA. The primary objectives of this study are 1) to evaluate the safety and reactogenicity of delayed heterologous or homologous vaccine doses after EUA dosed vaccines, and 2) to evaluate the breadth of the humoral immune responses of heterologous and homologous delayed boost regimens following EUA dosing.


Condition or disease Intervention/treatment Phase
COVID-19 Biological: Ad26.COV2.S Biological: BNT162b2 Biological: mRNA-1273 Biological: mRNA-1273.211 Phase 1 Phase 2

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 950 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Masking Description: study sites will administer product to which they have been assigned
Primary Purpose: Prevention
Official Title: A Phase 1/2 Study of Delayed Heterologous SARS-CoV-2 Vaccine Dosing (Boost) After Receipt of EUA Vaccines
Actual Study Start Date : May 28, 2021
Estimated Primary Completion Date : May 28, 2023
Estimated Study Completion Date : May 28, 2025

Arm Intervention/treatment
Experimental: Cohort 1 Group 10E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Janssen - Ad26.COV2-S 5x10^10 vp stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 100-mcg dose of mRNA-1273.211 (delayed boost dose). N = 50
Biological: mRNA-1273.211
Lipid nanoparticle (LNP) dispersion containing 1:1 mix of mRNAs that encodes for the prefusion stabilized S protein of the B.1.351 variant SARS-CoV-2 strain and the prefusion stabilized S protein of the Wuhan-Hu-1 strain used in mRNA-1273. mRNA-1273.211 (0.2 mg/mL) will be administered in 0.5 mL doses (100 mcg/0.5 mL).

Experimental: Cohort 1 Group 11E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 100-mcg dose of mRNA-1273.211 (delayed boost dose). N = 50
Biological: mRNA-1273.211
Lipid nanoparticle (LNP) dispersion containing 1:1 mix of mRNAs that encodes for the prefusion stabilized S protein of the B.1.351 variant SARS-CoV-2 strain and the prefusion stabilized S protein of the Wuhan-Hu-1 strain used in mRNA-1273. mRNA-1273.211 (0.2 mg/mL) will be administered in 0.5 mL doses (100 mcg/0.5 mL).

Experimental: Cohort 1 Group 12E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Janssen - Ad26.COV.2.S at 5x10^10 vp stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 50-mcg dose of mRNA- 1273 N = 50
Biological: mRNA-1273
Lipid nanoparticle (LNP) dispersion containing an mRNA that encodes for the prefusion stabilized spike (S) protein of the 2019 novel coronavirus (2019-nCoV).

Experimental: Cohort 1 Group 13E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Moderna-mRNA-1273 at 100mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 50-mcg dose of mRNA-1273. N = 50
Biological: mRNA-1273
Lipid nanoparticle (LNP) dispersion containing an mRNA that encodes for the prefusion stabilized spike (S) protein of the 2019 novel coronavirus (2019-nCoV).

Experimental: Cohort 1 Group 14E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 50-mcg dose of mRNA-1273. N = 50
Biological: mRNA-1273
Lipid nanoparticle (LNP) dispersion containing an mRNA that encodes for the prefusion stabilized spike (S) protein of the 2019 novel coronavirus (2019-nCoV).

Experimental: Cohort 1 Group 1E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Janssen - Ad26.COV.2.S at 5x10^10 vp stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of 100-mcg dose of mRNA-1273 (delayed boost dose). N = 50
Biological: mRNA-1273
Lipid nanoparticle (LNP) dispersion containing an mRNA that encodes for the prefusion stabilized spike (S) protein of the 2019 novel coronavirus (2019-nCoV).

Experimental: Cohort 1 Group 2E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA) -dosed vaccination with Moderna - mRNA-1273 at 100 mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 100-mcg dose of mRNA-1273 (delayed boost dose). N = 50
Biological: mRNA-1273
Lipid nanoparticle (LNP) dispersion containing an mRNA that encodes for the prefusion stabilized spike (S) protein of the 2019 novel coronavirus (2019-nCoV).

Experimental: Cohort 1 Group 3E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA) -dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n ˜ 25) randomized to receive a single intramuscular (IM) injection of a 100-mcg dose of mRNA-1273 (delayed boost dose). N = 50
Biological: mRNA-1273
Lipid nanoparticle (LNP) dispersion containing an mRNA that encodes for the prefusion stabilized spike (S) protein of the 2019 novel coronavirus (2019-nCoV).

Experimental: Cohort 1 Group 4E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Janssen - Ad26.COV2-S at 5x10^10 vp stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of Ad26.COV2.S 5x10^10 vp (delayed boost dose). N = 50
Biological: Ad26.COV2.S
Formulated to contain 5x10 virus particles of the Ad26 vector encoding the S glycoprotein of SARS-CoV-2. Each dose of the Ad26.COV2.S vaccine also includes sodium chloride, citric acid monohydrate, trisodium citrate dihydrate, polysorbate-80, 2-hydroxypropyl-ß-cyclodextrin, and ethanol. Ad26.COV2.S will be used undiluted to obtain the specified vp content in 0.5 mL doses. Each dose is 0.5 mL.

Experimental: Cohort 1 Group 5E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Moderna - mRNA-1273 at 100 mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of Ad26.COV2.S 5x10^10 vp (delayed boost dose). N = 50
Biological: Ad26.COV2.S
Formulated to contain 5x10 virus particles of the Ad26 vector encoding the S glycoprotein of SARS-CoV-2. Each dose of the Ad26.COV2.S vaccine also includes sodium chloride, citric acid monohydrate, trisodium citrate dihydrate, polysorbate-80, 2-hydroxypropyl-ß-cyclodextrin, and ethanol. Ad26.COV2.S will be used undiluted to obtain the specified vp content in 0.5 mL doses. Each dose is 0.5 mL.

Experimental: Cohort 1 Group 6E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of Ad26.COV2.S 5x10^10 vp (delayed boost dose). N = 50
Biological: Ad26.COV2.S
Formulated to contain 5x10 virus particles of the Ad26 vector encoding the S glycoprotein of SARS-CoV-2. Each dose of the Ad26.COV2.S vaccine also includes sodium chloride, citric acid monohydrate, trisodium citrate dihydrate, polysorbate-80, 2-hydroxypropyl-ß-cyclodextrin, and ethanol. Ad26.COV2.S will be used undiluted to obtain the specified vp content in 0.5 mL doses. Each dose is 0.5 mL.

Experimental: Cohort 1 Group 7E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Janssen - Ad26.COV.2.S 5x10^10 vp stratified with two age ranges of 18-55 years (n=˜ 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 30-mcg dose of BNT162b2 (delayed boost dose). N = 50
Biological: BNT162b2
A nucleoside-modified messenger RNA (modRNA) encoding the viral spike glycoprotein (S) of SARS-CoV-2. Each vial contains up to six doses. BNT162b2 (250 mcg/0.5 mL) will be administered in diluted 0.3 mL doses (30 mcg/0.3 mL).

Experimental: Cohort 1 Group 8E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Moderna - mRNA-1273 at 100 mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 30-mcg dose of BNT162b2 (delayed boost dose). N = 50
Biological: BNT162b2
A nucleoside-modified messenger RNA (modRNA) encoding the viral spike glycoprotein (S) of SARS-CoV-2. Each vial contains up to six doses. BNT162b2 (250 mcg/0.5 mL) will be administered in diluted 0.3 mL doses (30 mcg/0.3 mL).

Experimental: Cohort 1 Group 9E
Adaptive design cohort with participants that previously (>/=12 weeks) received Emergency Use Authorization (EUA)-dosed vaccination with Pfizer/BioNTech - BNT162b2 at 30 mcg for two doses stratified with two age ranges of 18-55 years (n = 25) and 56 or older (n = 25) randomized to receive a single intramuscular (IM) injection of a 30-mcg dose of BNT162b2 (delayed boost dose). N = 50
Biological: BNT162b2
A nucleoside-modified messenger RNA (modRNA) encoding the viral spike glycoprotein (S) of SARS-CoV-2. Each vial contains up to six doses. BNT162b2 (250 mcg/0.5 mL) will be administered in diluted 0.3 mL doses (30 mcg/0.3 mL).

Experimental: Cohort 2
A prospective design cohort with naïve to COVID-19 vaccine and infection participants of > / = 18 years of age to receive COVID-19 vaccine intramuscularly under Emergency Use Authorization dosing (EUA) (two vaccinations of mRNA-1273 at the 100mcg dose at a 28 days of interval) followed by a delayed booster vaccination (Novel homologous/ heterologous variant or heterologous platform boost) after a minimum of 12 weeks. Additional pools of subjects can be included as additional COVID-19 vaccines are awarded EUA (e.g., Janssen - Ad26.COV2.S or Novavax- NVX-CoV2373). N=250
Biological: Ad26.COV2.S
Formulated to contain 5x10 virus particles of the Ad26 vector encoding the S glycoprotein of SARS-CoV-2. Each dose of the Ad26.COV2.S vaccine also includes sodium chloride, citric acid monohydrate, trisodium citrate dihydrate, polysorbate-80, 2-hydroxypropyl-ß-cyclodextrin, and ethanol. Ad26.COV2.S will be used undiluted to obtain the specified vp content in 0.5 mL doses. Each dose is 0.5 mL.

Biological: BNT162b2
A nucleoside-modified messenger RNA (modRNA) encoding the viral spike glycoprotein (S) of SARS-CoV-2. Each vial contains up to six doses. BNT162b2 (250 mcg/0.5 mL) will be administered in diluted 0.3 mL doses (30 mcg/0.3 mL).

Biological: mRNA-1273
Lipid nanoparticle (LNP) dispersion containing an mRNA that encodes for the prefusion stabilized spike (S) protein of the 2019 novel coronavirus (2019-nCoV).




Primary Outcome Measures :
  1. Magnitude of SARS-CoV-2 specific antibody binding and neutralization titers [ Time Frame: Day 1 through 12 months post-boost dose ]
    Estimated by 95% confidence intervals (CI) for the geometric mean titer (GMT) at each timepoint when samples are collected.

  2. Occurrence of adverse events (AEs) [ Time Frame: Day 1 through 28 days post vaccination ]
    Following each vaccination and delayed boost dose

  3. Occurrence of Adverse Events of Special Interest (AESIs). [ Time Frame: Day 1 through 12 months post-boost dose ]
  4. Occurrence of New-Onset Chronic Medical Condition (NOCMCs). [ Time Frame: Day 1 through 12 months post-boost dose ]
  5. Occurrence of Related Medically attended adverse events (MAAEs). [ Time Frame: Day 1 through 12 months post-boost dose ]
  6. Occurrence of Serious Adverse Events (SAEs). [ Time Frame: Day 1 through 12 months post-boost dose ]
  7. Occurrence of solicited reactogenicity adverse events (AEs) [ Time Frame: Through 7 days post-boost dose ]
    Both local and systemic solicited reactogenicity adverse events (AEs) will be assessed.

  8. Response rate of SARS-CoV-2 specific antibody binding and neutralization titers [ Time Frame: Day 1 through 12 months post-boost dose ]
    Estimated by 95% confidence intervals (CI) for the geometric mean titer (GMT) at each timepoint when samples are collected.



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


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Ages Eligible for Study:   18 Years to 99 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

Participants must meet all of the following criteria to be eligible to participate in this study:

  1. Individuals >/= 18 years of age at the time of consent.
  2. Received and completed Coronavirus Disease 2019 vaccine under Emergency Use Authorization (EUA) dosing guidelines at least 12 weeks prior to enrollment (Cohort 1 only).
  3. Willing and able to comply with all scheduled visits, vaccination plan, laboratory tests and other study procedures.
  4. Determined by medical history, targeted physical examination and clinical judgement of the investigator to be in good health.*

    * Note: Heathy volunteers with pre-existing stable disease, defined as disease not requiring significant change in therapy or hospitalization for worsening disease during the 6 weeks before enrollment, can be included.

  5. Female participants of childbearing potential may be enrolled in the study, if all of the following apply:

    • Practiced adequate contraception for 28 days prior to the first dose of vaccine (Day 1),
    • Has agreed to continue adequate contraception through 3 months following the booster dose,
    • Has a negative pregnancy test at screening and on the day of the first study vaccine dose (Day 1),
    • Is not currently breastfeeding.

Exclusion Criteria:

Participants meeting any of the following criteria will be excluded from the study:

  1. Known history of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection.
  2. Prior administration of an investigational coronavirus (SARS Coronavirus (SARS-CoV), Middle East Respiratory Syndrome (MERS-CoV)) vaccine or SARS Coronavirus 2 (SARS-CoV-2) monoclonal antibody in the preceding 90 days or current/planned simultaneous participation in another interventional study.
  3. Receipt of SARS Coronavirus 2 (SARS-CoV-2) vaccine prior to study entry (Cohort 2 only).
  4. A history of anaphylaxis, urticaria, or other significant adverse reaction requiring medical intervention after receipt of a vaccine or nanolipid particles.
  5. Receipt of any investigational study product within 28 days prior to enrollment.
  6. Received or plans to receive a vaccine within 28 days prior to the first dose (Day 1) or plans to receive a non-study vaccine within 28 days prior to or after any dose of study vaccine (with exception for seasonal influenza vaccine within 14 days of study vaccine).
  7. Bleeding disorder diagnosed by a doctor (e.g., factor deficiency, coagulopathy, or platelet disorder requiring special precautions) or significant bruising or bleeding difficulties with intramuscular injections or blood draws, or previously experienced thrombosis with thrombocytopenia (TTS) or heparin-induced thrombocytopenia.
  8. Current or previous diagnosis of immunocompromising condition, immune-mediated disease, or other immunosuppressive condition.
  9. Received systemic immunosuppressants or immune-modifying drugs for >14 days in total within 6 months prior to Screening (for corticosteroids >/= 20 milligram per day of prednisone equivalent). Topical tacrolimus is allowed if not used within 14 days prior to Day 1.
  10. Received immunoglobulin, blood-derived products, within 90 days prior to first study vaccination.
  11. An immediate family member or household member of this study's personnel.
  12. Is acutely ill or febrile 72 hours prior to or at vaccine dosing (fever defined as >/= 38.0 degrees Celsius or 100.4 degrees Fahrenheit). Participants meeting this criterion may be rescheduled within the relevant window periods. Afebrile participants with minor illnesses can be enrolled at the discretion of the investigator.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04889209


Contacts
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Contact: 21-0012 Central Contact 13017617948 DMIDClinicalTrials@niaid.nih.gov

Locations
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United States, Georgia
Emory Vaccine Center - The Hope Clinic Recruiting
Decatur, Georgia, United States, 30030-1705
United States, Maryland
University of Maryland Baltimore - Institute of Human Virology Recruiting
Baltimore, Maryland, United States, 21201-1009
United States, New York
New York University School of Medicine - Langone Medical Center - Vaccine Center Recruiting
New York, New York, United States, 10016
NYU Langone Vaccine Center Recruiting
New York, New York, United States, 10016
University of Rochester Medical Center - Vaccine Research Unit Recruiting
Rochester, New York, United States, 14642
United States, Ohio
Cincinnati Children's Hospital Medical Center - Infectious Diseases Not yet recruiting
Cincinnati, Ohio, United States, 45206-1613
United States, Pennsylvania
University of Pittsburgh - Medicine - Infectious Diseases Recruiting
Pittsburgh, Pennsylvania, United States, 15213-3205
United States, Texas
University of Texas Medical Branch - Division of Infectious Disease Recruiting
Galveston, Texas, United States, 77555-0435
Baylor College of Medicine - Molecular Virology and Microbiology Recruiting
Houston, Texas, United States, 77030-3411
United States, Washington
Kaiser Permanente Washington Health Research Institute - Vaccines and Infectious Diseases Recruiting
Seattle, Washington, United States, 98101-1466
The University of Washington - Virology Research Clinic Recruiting
Seattle, Washington, United States, 98104
Sponsors and Collaborators
National Institute of Allergy and Infectious Diseases (NIAID)
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Responsible Party: National Institute of Allergy and Infectious Diseases (NIAID)
ClinicalTrials.gov Identifier: NCT04889209    
Other Study ID Numbers: 21-0012
5UM1AI148684-02 ( U.S. NIH Grant/Contract )
First Posted: May 17, 2021    Key Record Dates
Last Update Posted: September 24, 2021
Last Verified: September 7, 2021

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Product Manufactured in and Exported from the U.S.: No
Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Heterologous Nonvariant Boost
SARS-COV-2
SARS-COV-2 Vaccine
Additional relevant MeSH terms:
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COVID-19
Respiratory Tract Infections
Infections
Pneumonia, Viral
Pneumonia
Virus Diseases
Coronavirus Infections
Coronaviridae Infections
Nidovirales Infections
RNA Virus Infections
Lung Diseases
Respiratory Tract Diseases