COVID booster vaccine


Did you get your COVID booster dose?


The purpose of this clinical research study is to evaluate the safety and efficacy of a COVID-19 vaccine booster in preventing symptomatic COVID-19 infection. The study will also investigate the durability of the immune response.

Participating in this study offers several advantages to people who have already received a vaccine against COVID-19. First, by receiving a booster dose, participants will have the opportunity to potentially increase their protection against COVID-19.

Additionally, by participating in the study, individuals will help advance our understanding of the effectiveness of booster shots in maintaining immunity against the virus with this new form of booster.

The study will involve follow-up visits to monitor any side effects and measure your immune response.

To participate, you must:

  • Be between 18 and 65 years old
  • Be in good general health

You will be reimbursed for expenses related to the study during your participation and you will be surrounded by a medical team throughout the process.

I want to apply to this clinical study


For more information, contact us at
819 346-2887 (Sherbrooke), 581 477-3439 (Québec), 819 260-1172 (Victoriaville), 579 841-0571 (Joliette)
or at 1-844-739-3439 (toll free), or fill the online form.

The study process in pictures


Step 1 | Before starting the study, we will take time to fully explain the selection process and the conduct of the study by phone.


Step 2 | After the initial phone interview, if you are still interested in taking part in a study, we schedule a preliminary meeting with you during which you may ask all the questions you wish and take the time you require to read over the consent form. This form explains, in detail, the different stages of each study.


Step 3 | You may make a decision at that time to move forward with or terminate the selection process. However, you are under no obligation to make an immediate decision. Based on briefing content, you may take the time necessary to come to a decision and consult with your personal physician or loved ones.


Step 4 | Depending on the nature of the study, some tests or medical examinations may be required. In the majority of cases, these tests or examinations are conducted on Diex Research premises based on your individual availability.


Step 5 | If you are eligible, you may then begin a clinical study with us.