Clinical trials

The goal of this clinical trial is to learn if the RSV vaccine (protects against respiratory syncytial virus) and Tdap vaccine (protects against pertussis) are most effective in pregnant individuals when taken together at the same visit, or separately at different visits. This clinical trial will also learn about the safety and immune responses of these vaccines in pregnancy. The Main question: -Is it possible to run a successful trial that tests how safe and effective it is to give Tdap and RSV vaccines in pregnancy either at the same time or one after the other, at different visits? The Secondary question: -To determine how safe and how well the Tdap and RSV vaccines work when given in pregnancy either at the same time or one after the other, at different visits. The Exploratory (optional participation) questions: * To measure the levels of antibodies against whooping cough (pertussis) and RSV in mothers at 7 and 19 months after giving birth, depending on whether they got the vaccines at the same time or one after the other during pregnancy. * To measure whooping cough antibody levels in the babies at 2, 7, and 19 months of age, whose mothers who received the vaccines in pregnancy. * To measure the levels of RSV antibodies in the mothers' breast milk at 1 week, 2 weeks, 4 weeks, and 2 months after giving birth. Participants will be randomly assigned to Group 1 (vaccines given at the same time, same visit) or Group 2 (vaccines given one after the other, at different visits). There are 4 visits as part of the main study, and 6 additional visits as part of the optional study (exploratory questions). Visit 1-2: Blood collection and vaccines administered Visit 3-4: Blood work (cord blood sample collection from infant, after delivery, if possible) Visit 5-8: Breast milk collection Visit 8-10: Blood collection (infant blood collection only at Visit 8). Participants will be asked to keep a diary of symptoms throughout the study.

The goal of this pilot demonstration and evaluation project is to determine the acceptability and feasibility of a co-payment model among the public and providers and assess whether a co-payment model in community pharmacies in Nova Scotia and Ontario increases the accessibility and uptake of recommended but unfunded vaccines. The research questions that guided the development of this study are: * What is the feasibility of implementing a co-payment model for recommended but unfunded vaccines in community pharmacies? * To what extent is a co-payment model for recommended but unfunded vaccines perceived as acceptable to community pharmacists and the public? A co-payment model will be piloted at a maximum of 8 select community pharmacy sites in Nova Scotia (n=4 sites) and Ontario (n=4 sites). Each community pharmacy site will be randomly assigned to pilot one of the steps of the co-payment model for the duration of the demonstration project. At the end of the pilot study, participating pharmacy providers will be asked to complete an online survey about their experiences in implementing the co-payment model into their pharmacy. As part of the co-payment model, recruited members of the public (participants) will choose to receive the vaccine (if eligible) at a reduced cost either for themselves or their dependent (e.g., incapable minor or adult), as part of routine care (following standard pharmacy practice). After receiving the vaccine, the participant will complete an online survey exploring their thoughts on the co-payment model, their satisfaction with the co-payment model, their perception on vaccines in general, and their demographics (such as gender, age, education, race/ethnicity).

Since the 2019-2020 school year, the province of Quebec (Canada) has been administering one dose of nonavalent (9vHPV) vaccine to students of all genders in Grade 4 of elementary school through the school-based program. Little data on the immunogenicity (antibody production) and long-term efficacy of a single dose of the vaccine are available, particularly in boys. The primary objective of this study is to assess the persistence of HPV antibodies six years after the administration of a single dose of the 9vHPV vaccine to students aged 9 to 11 years in Grade 4 in 2019-2020. The study will be conducted at the CHU de Québec-Université Laval research center. Recruitment is conducted through school service centers in the Quebec City region. Youth who received only a single dose of the 9vHPV vaccine at the ages of 9-11 in 2019-2020 will be eligible to participate. Approximately 300 youth will take part in this study: 150 girls and 150 boys. Participants will have to answer few questions about their health to ensure their eligibility for the study. For eligible participants consenting to participate a 10 ml (\<1 tablespoon) blood sample will be taken.