The solicited administration site events are pain, redness, swelling and lymphadenopathy (axillary swelling/ tenderness on the same side of the body as the site of injection). Any = occurrence of the event regardless of intensity grade.

The solicited systemic events are fever, headache, myalgia (muscle pain), arthralgia (joint pain), fatigue (tiredness), chills, abdominal pain, vomiting and diarrhea. Fever is defined as body temperature ≥38ºC; preferred location for measuring the temperature is oral. Any = occurrence of the event regardless of intensity grade.

An unsolicited AE is an AE that is either not included in the list of solicited events or can be included in the list of solicited events but with an onset outside the specified period of follow-up for solicited events. Unsolicited AEs include both serious and nonserious AEs. Any = occurrence of the event regardless of intensity grade.

The hematological and biochemical parameters included alanine aminotransferase (ALT), alkaline phosphatase (ALP), aspartate aminotransferase (AST), total bilirubin, creatinine, direct bilirubin, basophils, eosinophils increase, erytrocytes, hemoglobin decrease, lymphocytes decrease, mean corpuscular hemoglobin, mean corpuscular volume, monocytes, neutrophils decrease, platelets decrease, white blood cells (WBC) increase. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

A MAAE is an AE for which the participant received medical attention including any symptom or illness requiring hospitalization, or an emergency room visit, or visit to/by a healthcare professional. Any = occurrence of the event regardless of intensity grade.

An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, abnormal pregnancy outcome or any other situation as determined by the investigator. Any = occurrence of the event regardless of intensity grade.

AESIs include potential immune-mediated diseases (pIMDs) which are autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune etiology, myocarditis, and pericarditis, virologically confirmed COVID-19 cases, anaphylaxis, or severe hypersensitivity within 24 hours after study investigational product administration. Any = occurrence of the event regardless of intensity grade.