Immunogenicity Study of S-OIV H1N1 Influenza Vaccine

Study Overview
=================
Brief Summary
-----------------
The primary immunogenicity objective is to assess the antibody response and T-cell response of split-virion inactivated A (H1N1) vaccine. Participants will include up to 20 healthy persons of age 20 and older who have no history of novel influenza H1N1 2009 infection in latest 3 months or novel influenza H1N1 2009 vaccination. This is a randomized study in healthy males and non-pregnant females, aged 20 years and older. All subjects will be stratified into 1 dose group (15mcg per dose), and will receive intramuscular influenza H1N1 vaccine. The H1N1 vaccine will be administered at Day 0 and Day 21. On Day 0, Day 10, Day 21, Day 28, Day 35 and Day 42 after first vaccination (Day 0), the immunogenicity testing will be manipulated. The antibody response of immunogenicity testing will be hemagglutination inhibiting (HAI) on serum. The T-cell response will be interferon-gamma ELISPOT assay and Tetramer staining using PBMCs.

Detailed Description
-----------------
In 2009, a novel swine-origin influenza A/H1N1 virus was identified as a significant cause of febrile respiratory illnesses in North America. It rapidly spread to many countries around the world, which soon meets the World Health Organization (WHO) criteria for a pandemic. Data from several clinical trails with the split-virion inactivated S-OIV vaccine suggest that the vaccine stimulated strong specific antibody against S-OIV. However, the is no T-cell response data after the vaccination. In addition, we do not know S-OIV specific cellular immunity level of the population. These facts indicate the need to assess both the antibody response and T-cell response after the vaccination of the split-virion inactivated S-OIV vaccine. The primary immunogenicity objective is to assess the antibody response and T-cell response of split-virion inactivated A (H1N1) vaccine. Participants will contain only one age group, including up to 20 healthy persons of age 20 and older who have no history of novel influenza H1N1 2009 infection in latest 3 months or novel influenza H1N1 2009 vaccination. This is a randomized study in healthy males and non-pregnant females. All subjects will be stratified into 1 dose group (15mcg per dose), and will receive intramuscular influenza H1N1 vaccine. The H1N1 vaccine will be administered at Day 0 and Day 21. On Day 0, Day 10, Day 21, Day 28, Day 35 and Day 42 after first vaccination (Day 0), the immunogenicity testing will be manipulated. The antibody response of immunogenicity testing will be hemagglutination inhibiting (HAI) on serum. The T-cell response will be interferon-gamma ELISPOT assay and Tetramer staining using PBMCs.

Official Title
-----------------
Study of Humoral and Cellular Immunogenicity of Split-vaccine to Swine-origin H1N1 Influenza

Conditions
-----------------
Human Influenza

Intervention / Treatment
-----------------
* Biological: split-virion, H1N1 vaccine of 15 μg


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Healthy male or female aged 20 and older Be able to show legal identity card for the sake of recruitment Volunteers or their guardians are able to understand and sign the informed consent Exclusion Criteria: Cases, cured cases and close contact of influenza A (H1N1) virus Women of pregnancy, lactation or about to be pregnant in 60 days Subject that has a medical history of any of the following: allergic history, or allergic to any ingredient of vaccine, such as egg, egg protein, etc Serious adverse reactions to vaccines such as anaphylaxis, hives, respiratory difficulty, angioedema, or abdominal pain Autoimmune disease or immunodeficiency Asthma that is unstable or required emergent care, hospitalization or intubation during the past two years or that required the use of oral or intravenous corticosteroids Diabetes mellitus (type I or II), with the exception of gestational diabetes History of thyroidectomy or thyroid disease that required medication within the past 12 months Serious angioedema episodes within the previous 3 years or requiring medication in the previous two years Bleeding disorder diagnosed by a doctor (e.g. factor deficiency, coagulopathy, or platelet disorder requiring special precautions) or significant bruising or bleeding difficulties with IM injections or blood draws Active malignancy or treated malignancy for which there is not reasonable assurance of sustained cure or malignancy that is likely to recur during the period of study Seizure disorder other than: Febrile seizures under the age of two years old Seizures secondary to alcohol withdrawal more than 3 years ago, or A singular seizure not requiring treatment within the last 3 years Asplenia, functional asplenia or any condition resulting in the absence or removal of the spleen Guillain-Barre Syndrome Any history of immunosuppressive medications or cytotoxic medications or inhaled corticosteroids within the past six months (with the exception of corticosteroid nasal spray for allergic rhinitis or topical corticosteroids for an acute uncomplicated dermatitis) History of any blood products or swine-origin H1N1 or seasonal influenza vaccine administration within 3 months before the dosing Administration of any other investigational research agents within 30 days before the dosing Administration of any live attenuated vaccine within 30 days before the dosing Administration of subunit or inactivated vaccines, e.g., pneumococcal vaccine, or allergy treatment with antigen injections, within 14 days before the dosing Be receiving anti-TB prophylaxis or therapy currently Axillary temperature > 37.0 centigrade at the time of dosing Psychiatric condition that precludes compliance with the protocol: Past or present psychoses Past or present bipolar disorder requiring therapy that has not been well controlled on medication for the past two years Disorder requiring lithium Suicidal ideation occurring within five years prior to enrollment Any medical, psychiatric, social condition, occupational reason or other responsibility that, in the judgment of the investigator, is a contraindication to protocol participation or impairs a volunteer's ability to give informed consent

Ages Eligible for Study
-----------------
Minimum Age: 20 Years
Maximum Age: 50 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| vaccinated group<br> | Biological: split-virion, H1N1 vaccine of 15 μg<br>* split-virion inactivated S-OIV vaccine of 15 μg on day 0 and 21.<br>* Other names: S-OIV vaccine;|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Assess the immunity level of the subjects before vaccination. | hemagglutination inhibiting (HAI), ELISPOT and Tetramer staining. | On Day 0 after first vaccination | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Assess the immunity level of the subjects 10 days after vaccination | hemagglutination inhibiting (HAI), ELISPOT and Tetramer staining. | On Day 10 after first vaccination | 
| Assess the immunity level of the subjects 21 days after vaccination | hemagglutination inhibiting (HAI), ELISPOT and Tetramer staining. | On Day 21 after first vaccination | 
| Assess the immunity level of the subjects 28 days after vaccination | hemagglutination inhibiting (HAI), ELISPOT and Tetramer staining. | On Day 28 after first vaccination | 
| Assess the immunity level of the subjects 35 days after vaccination | hemagglutination inhibiting (HAI), ELISPOT and Tetramer staining. | On Day 35 after first vaccination | 
| Assess the immunity level of the subjects 42 days after vaccination | hemagglutination inhibiting (HAI), ELISPOT and Tetramer staining. | On Day 42 after first vaccination | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
the antibody response, T-cell response, S-OIV, vaccine, Immunogenicity assessment