Vaccination
Conditions
Keywords
Neisseria meningitidis B:14, P1-7, 16, Serum bactericidal activity, Menbvac
Brief summary
The main objective of the study is to estimate the proportion of children, born between the 06/04/2004 and the 17/004/2008, living around Neufchatel en Bray, vaccinated by MenBVac, with a serum bactericidal activity against B:14,P1-7,16 clone related to a protection (\>= 4), before the first vaccination (T0), after the second MenBvac vaccination (6 weeks after the second vaccination), before the third MenBvac vaccination and after the third MenBvac vaccination (6 weeks after the second vaccination) and one year after the third menBvac vaccination.
Interventions
* First blood sample prior to vaccination with MenBVac * First and second doses of MenBVac * Second blood sample 6 weeks after the second dose of the vaccine * Third blood sample immediatly before the third dose of the vaccine * Third dose of MenBVac * Fourth blood sample 6 weeks after the third dose of the vaccine * Fifth blood sample one year after the third dose of the vaccine
Sponsors
Study design
Eligibility
Inclusion criteria
* children born between 06/04/2004 and 17/04/2008, living in Neufchatel en Bray, vaccinated five times by MenBVac * parental authority(ies)assent
Exclusion criteria
* no parental authority(ies)assent * no blood sample during the third vaccination * impossibility of third vaccination * children with guardianship * children yet vaccinated or non eligible for vaccination
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| assessment of natural Immunity with measure of percent of children who have hSBA title >= 4 at TO. assessment of antibodies blood persistence during measurement of percent of children who have hSBA title >= 4 | 18 months |
Countries
France