This study, a pilot randomized controlled trial, single-blind (outcome assessor),evaluating the immune response (both humoral and cell-mediated) against SARS-CoV-2 andthe safety of three different vaccine administration approaches: the SARS-CoV-2 mRNAvaccine alone, the influenza vaccine alone, and the co-administration of both vaccines.
Not Provided
Biological: Bivalent mRNA SARS-CoV-2 vaccine
Administering a booster dose of the bivalent mRNA vaccine BNT162b2
Biological: Quardrivalent influenza vaccine
Administering a VaxigripTetra™
Inclusion Criteria:
- Thai adults aged 18-60 years, who have vaccinated COVID-19 and influenza vaccine
more than 6 months.
- The subjects are able to and willing to comply with the requirements of the clinical
trial program and could complete the 1-month follow-up of the study.
- Individuals who are in good health condition at the time of entry into the trial as
determined by medical history, physical examination and clinical judgment of the
investigator and meet the requirements of immunization.
- The subject can provide with informed consent and sign informed consent form (ICF).
Exclusion Criteria:
- Have history of influenza or COVID-19 infection within 6 months.
- Have the medical history or family history of convulsion, epilepsy, encephalopathy,
and psychosis.
- Be allergic to any component of the research vaccines or used to have a history of
hypersensitivity or serious reactions to vaccination.
- History of Guillain-Barré syndrome.
- Women with positive urine pregnancy test, pregnant or breast-feeding, or have a
pregnancy plan within six months of after baseline period.
- Have infectious diseases, including HIV and SARS-CoV-2 infection or any symptom of
common cold.
- Have history of SARS-CoV-2 infection less than 6 months.
- Having severe chronic diseases or condition in progress cannot be controlled. For
example, poor controlled DM and uncontrolled HT.
- Have the history of urticaria 1 year before receiving the investigational vaccine.
- Have known underlying diseases of thrombocytopenia or other coagulation disorders
(which may cause contraindications for intramuscular injection).
- Having needle sickness.
- Have the history of immunosuppressive therapy, cytotoxic therapy, or systemic
corticosteroids.
- Have received blood products within 4 months before injection of investigational
vaccines.
- Under anti-tuberculosis treatment.
- Not be able to follow the protocol, or not be able to understand the informed
consent according to the researcher's judgment, due to various medical,
psychological, social, or other conditions.
Faculty of Medicine, Prince of Songkla University
Songkhla 1606147, Thailand
Sarunyou Chusri, M.D., Ph.D., Principal Investigator
Prince of Songkla University