Search clinical trials for: Pfizer/BioNTech BNT162b2 vaccine (PF) half dose

Total 56 results

Mahidol University
Clinixir Co., Ltd.; Program Management Unit-C (PMU-C), governed by Ministry...

Completed

Third Dose Vaccination With AstraZeneca or Pfizer COVID-19 Vaccine Among Adults Received Sinovac COVID-19 Vaccine

COVID-19 Infection | COVID-19 VACCINE

Thailand
National Institute of Allergy and Infectious Diseases...
PPD

Completed

COVID-19 Protection After Transplant Pilot Study (CPAT)

Kidney Transplant Recipients

United States
Istanbul University - Cerrahpasa (IUC)
Scientific Research Projects Coordination Unit of Istanbul University-Cerrahpasa...

Completed

Humoral and Cellular İmmune Response to SARS-CoV-2 mRNA BNT162b2 Vaccine in Children With Chronic Kidney Diseases

Chronic Kidney Disease 5D | Chronic Kidney Disease 5T

Turkey
Royal College of Surgeons in Ireland - Medical...
Ministry of Health, Bahrain; The National Taskforce for Combatting COVID-19-... and other collaborators

Completed

Safety and Efficacy of COVID-19 Prime-boost Vaccine in Bahrain

Covid19 | SARS-CoV 2 Infection

Bahrain
Pfizer

Completed

COVID-19 Vaccination and Breakthrough Infections Among Persons With Immunocompromising Conditions in the United States

Covid-19 | Immunocompromised | Breakthrough Infection | SARS-COV-2 Infection | SARS-COV-2 | Immunosuppressed

United States
Hospital Moinhos de Vento
Pfizer; Universidade Federal do Paraná; Inova Medical

Completed

A Real-world Evidence Study of BNT162b2 mRNA Covid-19 Vaccine Among Children in Brazil

COVID-19

Brazil
Murdoch Childrens Research Institute
Indonesia University; Universitas Padjadjaran; Health Development Policy Agency... and other collaborators

Withdrawn

Evaluation of COVID-19 Vaccines Given as a Booster in Healthy Adults in Indonesia (MIACoV Indonesia)

COVID-19

Indonesia
KK Women's and Children's Hospital
Duke-NUS Graduate Medical School

Recruiting

Determining Reactogenicity and Immunogenicity of Delayed COVID-19 Vaccine Schedule in Children

COVID-19 | Vaccine Reaction | Children, Only

Singapore
DHR Health Institute for Research and Development

Recruiting

PROSPECTIVE OPEN LABEL CLINICAL TRIAL TO ADMINISTER A BOOSTER DOSE OF PFIZER/BIONTECH OR MODERNA COVID-19 VACCINE IN HIGH-RISK INDIVIDUALS

COVID-19 | SARS CoV 2 Infection

United States
Murdoch Childrens Research Institute
Coalition for Epidemic Preparedness Innovations; The Peter Doherty Institute...

Withdrawn

COVID-19 Fourth Dose Study in Australia

COVID-19

Australia
Murdoch Childrens Research Institute
Coalition for Epidemic Preparedness Innovations; The Peter Doherty Institute...

Completed

Evaluation of Full Versus Fractional Doses of COVID-19 Vaccines Given as a Booster in Adults in Australia - Mongolia, Indonesia, Australia Coronavirus (MIACoV). (MIACoV)

COVID-19

Australia
Pfizer

Recruiting

Effectiveness and Use of COVID-19 Vaccines Using Information From the California State Vaccine Registry

COVID-19 | SARS-CoV-2 | Post-Acute COVID-19 Syndrome

United States
Assistance Publique - Hôpitaux de Paris
IREIVAC/COVIREIVAC Network

Active, not recruiting

Immunogenicity and Reactogenicity of the Beta-variant Recombinant Protein Booster Vaccine (VidPrevtyn Beta, Sanofi) Compared to a Bivalent mRNA Vaccine (Comirnaty Original/Omicron BA.4-5, BioNTech-Pfizer) in Adults Previously Vaccinated With at Least 3 Doses of COVID-19 mRNA Vaccine (CoviBOOST 2)

COVID-19 | Vaccine Reaction

France
National Institute of Allergy and Infectious Diseases...

Completed

The Safety of Administering a Second Dose of a COVID-19 mRNA Vaccine in Individuals Who Experienced a Systemic Allergic Reaction to an Initial Dose

Systemic Allergic Reaction

United States
Hospital Moinhos de Vento
Pfizer; Universidade Federal do Paraná; Inova Medical

Completed

A Real-world Evidence Study of BNT162b2 mRNA Covid-19 Vaccine in Brazil

Covid19

Brazil
Sunnybrook Health Sciences Centre
University Health Network, Toronto; Unity Health Toronto; Scarborough General... and other collaborators

Terminated

COVID-19 Vaccine Boosters in Patients With CKD (BOOST KIDNEY)

COVID-19 | Chronic Kidney Diseases

Canada
ANRS, Emerging Infectious Diseases
Institut National de la Santé Et de la Recherche Médicale, France

Completed

BNT162b2 Vaccination With 2 Doses in COVID-19 Negative Volunteers and With a Single Dose in COVID-19 Positive Volunteers (CoviCompareP)

Healthy | Immunization; Infection

France
Murdoch Childrens Research Institute
Coalition for Epidemic Preparedness Innovations; The Peter Doherty Institute...

Active, not recruiting

Evaluation of Full Versus Fractional Dose of COVID-19 Vaccine Given as a Booster for the Prevention of COVID-19 in Adults in Mongolia.

COVID-19

Mongolia
University Hospital, Basel, Switzerland
Swiss National Science Foundation; ModernaTX, Inc.

Completed

Immunocompromised Swiss Cohorts Based Trial Platform (COVERALL)

Immunocompromised Patients

Switzerland
National Institute of Allergy and Infectious Diseases...
Rho Federal Systems Division, Inc.; Immune Tolerance Network (ITN)

Completed

COVID19 SARS Vaccinations: Systemic Allergic Reactions to SARS-CoV-2 Vaccinations (SARS)

COVID-19 | SARS-CoV Infection | Allergic Reaction | Mast Cell Disorder

United States
Pfizer

Recruiting

Pfizer-BioNTech COVID-19 Vaccine Effectiveness Study - Kaiser Permanente Southern California

COVID-19

United States
Oliver Cornely, MD
European Commission; VACCELERATE

Completed

Assessing Immune Response of Different COVID-19 Vaccines in Older Adults (EU-COVAT-1)

COVID-19 | Vaccination; Infection | Vaccination Reaction

Spain, Ireland, Germany, Norway, Lithuania
National Institute of Allergy and Infectious Diseases...

Completed

SARS-CoV-2 Immune Responses After COVID-19 Therapy and Subsequent Vaccine

Covid19 | SARS-CoV2 Infection

United States
Assistance Publique - Hôpitaux de Paris
COVIREIVAC

Active, not recruiting

Immunogenicity and Reactogenicity Following a Booster Dose of COVID-19 mRNA Vaccine (Pfizer-BioNtech) and Two Adjuvanted Sub-unit Vaccines (SP/GSK) Administered in Adults Who Received 2 Doses of Pfizer-BioNTech mRNA Vaccine as a Primary Vaccination (COVIBOOST)

COVID-19 | Vaccine Reaction

France
Soroka University Medical Center
Ben-Gurion University of the Negev

Active, not recruiting

Prospective Monitoring of BNT162b2 Second Vaccination Booster Effects in Health Care Workers (HCW)

Coronavirus Infections

Israel
Respiralab

Completed

Adverse Reactions Following COVID-19 Vaccination Among Ecuadorian Healthcare Workers

Adverse Drug Event

Ecuador
University Hospital, Caen

Completed

Transverse Myelitis Related to SARS-CoV-2 Vaccines

Vaccine Adverse Reaction

France
Chinese University of Hong Kong
The University of Hong Kong; Health and Medical Research Fund

Recruiting

Lung Function, Exercise Capacity, and Serology Responses in Patients With COVID-19

Quality of Life | Covid19 | Exercise Capacity | Lung Function

Hong Kong
Centre Hospitalier Universitaire de Saint Etienne
Sanofi Pasteur, a Sanofi Company; Bioster, a.s.

Completed

Factors Influencing the COVID-19 Vaccine Immune Response According to Age and Presence or Not of a Past History of COVID-19 (COVIMMUNAGE)

Covid19

France
Hipra Scientific, S.L.U

Completed

Assessing the Immunogenicity and Safety of a HIPRA's Candidate Booster Vaccination in Adults Fully Vaccinated With Adenovirus Vaccine Against COVID-19.

COVID-19 | SARS-CoV-2 Acute Respiratory Disease

Spain
Federal University of Espirito Santo
Butantan Institute; Centro de Pesquisas René Rachou; Secretaria de Estado da...

Recruiting

Efficacy, Immunogenicity and Safety of Inactivated Vaccine (Coronavac) Against SARS-COV2 in Children and Adolescents (Curumim)

COVID-19

Brazil
Huntington Memorial Hospital

Completed

Post COVID-19 Vaccination Analysis in Healthcare Worker Recipients

Covid19 | Vaccine Reaction

United States
Pontificia Universidad Catolica de Chile

Completed

Immune Response to Third Dose of COVID-19 Vaccine in Solid Organ Transplant

COVID-19 | SARS-CoV-2 Infection | Solid Organ Transplant | Vaccine Response Impaired

Chile
Hipra Scientific, S.L.U
National Institute of Hygiene and Epidemiology, Vietnam; Laboratorios Hipra...

Completed

Safety and Immunogenicity of Recombinant Protein RBD Fusion Dimer Vaccine Against the Virus That Cause COVID-19, Known as Severe Acute Respiratoy Syndrome Coronavirus 2 (SARS-CoV-2)

COVID-19 | SARS-CoV-2 Acute Respiratory Disease

Vietnam
Hipra Scientific, S.L.U
Laboratorios Hipra, S.A.

Completed

Immunogenicity and Safety of a Booster Vaccination With a Recombinant Protein RBD Candidate Vaccine Against SARS-CoV-2 in Healthy Adults Volunteers Fully Vaccinated Followed by an Extension Period to Study a Fourth Dose Administration.

COVID-19 | SARS-CoV-2 Acute Respiratory Disease

Spain
University of Liege
Pfizer

Recruiting

Impact of the Immune System on Response to Anti-Coronavirus Disease 19 (COVID-19) Vaccine in Allogeneic Stem Cell Recipients (Covid Vaccin Allo)

Coronavirus Disease 2019 (Covid19) | Hematopoietic Neoplasms

Belgium
National Institute of Allergy and Infectious Diseases...
National Heart, Lung, and Blood Institute (NHLBI); University of Copenhagen; US... and other collaborators

Completed

Vaccination for Recovered Inpatients With COVID-19 (VATICO)

Covid19

United States, Spain, Uganda, Nigeria, Singapore, Switzerland
University of Michigan
The Wallace Foundation

Recruiting

Assessing Safety of Coronavirus Infection (COVID-19) Messenger RNA (mRNA) Vaccine Administration in the Setting of a Previous Adverse Reaction

COVID-19 | Corona Virus Infection

United States
Murdoch Childrens Research Institute

Completed

Investigating COVID-19 Vaccine Immunity in Children in the Melbourne Infant Study of BCG for Allergy and Infection Reduction (COSI BAIR)

COVID-19 | Vaccine Reaction | Immunization; Infection

Australia
Providence Therapeutics Holdings Inc.

Completed

PTX-COVID19-B, an mRNA Humoral Vaccine, Intended for Prevention of COVID-19 in a General Population. This Study is Designed to Demonstrate the Safety, Tolerability, and Immunogenicity of PTX-COVID19-B in Comparison to the Pfizer-BioNTech COVID-19 Vaccine.

Covid19 Vaccine

Canada, South Africa
Canadian Immunization Research Network
Massachusetts General Hospital; CHU de Quebec-Universite Laval; McGill University... and other collaborators

Active, not recruiting

Mix and Match of the COVID-19 Vaccine for Safety and Immunogenicity (MOSAIC)

COVID-19

Canada
Bayside Health
Monash University

Recruiting

Bringing Optimised COVID-19 Vaccine Schedules To ImmunoCompromised Populations (BOOST-IC): an Adaptive Randomised Controlled Clinical Trial

Lymphoma, Non-Hodgkin | Multiple Myeloma | HIV | Chronic Lymphocytic Leukemia | Organ Transplantation | COVID-19 Vaccines

Australia
dafna yahav

Not yet recruiting

Booster Dose of COVID-19 Vaccine for Kidney Transplant Recipients Without Adequate Humoral Response (WHO)

Immunosuppression | COVID-19 Acute Respiratory Distress Syndrome
University Health Network, Toronto
Canadian Institutes of Health Research (CIHR); Samuel Lunenfeld Research Institute... and other collaborators

Active, not recruiting

SafeTy and Efficacy of Preventative CoVID Vaccines (STOPCoV)

Vaccine Response | COVID-19 Virus Infection

Canada
University of Oxford

Enrolling by invitation

Immunogenicity of COVID-19 Vaccines in Tuberculosis Patients (CVTB)

Tuberculosis | Covid-19 Pandemics

Thailand
AstraZeneca

Completed

Effectiveness of the Oxford-AstraZeneca COVID-19 Vaccine as a 2nd Booster, the REFORCO-Brazil Study (REFORCO-B)

COVID-19

Brazil
CanSino Biologics Inc.

Completed

IH Convidecia as Second Booster Dose Against Breakthrough Infections

COVID-19

Malaysia
Hacettepe University

Completed

Hacettepe University COVID-19 Vaccinated's Health Cohort- Students of Health Sciences (HU-CoVaCS)

SARS-CoV2 Infection | COVID-19 Pandemic | Health | Immunization; Infection

Turkey
National Institute of Allergy and Infectious Diseases...
Rho Federal Systems Division, Inc.; Autoimmunity Centers of Excellence

Completed

COVID-19 Booster Vaccine in Autoimmune Disease Non-Responders

Systemic Lupus Erythematosus (SLE) | Multiple Sclerosis (MS) | Rheumatoid Arthritis (RA) | Juvenile Dermatomyositis (JDM) | Juvenile Idiopathic Arthritis (JIA) | Pemphigus Vulgaris | Systemic Sclerosis (SSc) | Pediatric SLE | Pediatric-Onset Multiple Sclerosis (POMS)

United States
Assistance Publique - Hôpitaux de Paris
IREIVAC/COVIREIVAC Network

Active, not recruiting

Randomized, Single-blinded, Multicenter Trial Comparing the Immune Response to a 2nd Booster Dose of COVID-19 mRNA Vaccine (Pfizer-BioNTech) or Sanofi /GSK B.1.351 Adjuvanted Vaccine in Adults (COVIBOOSTAnci1)

COVID-19 Vaccines

France

Search clinical trials for: Pfizer/BioNTech BNT162b2 vaccine (PF) half dose

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