Systems Biology of 2010 trivalent Influenza vaccine (TIV) in young and elderly (see companion study SDY61 2007, SDY270 2009, SDY119 2011)

Single center, open label study in which adult healthy volunteers with no contraindications to immunization will be vaccinated with TIV. Blood samples will be collected on Days D0 (at enrollment) and D1, D3, D7, D14, D30, D180 post vaccination to study innate and/or adaptive immunity markers. Even though influenza vaccination is considered safe, volunteers will be asked to report any local or systemic AEs from Day 0 (vaccination) to Day 7 in memory aids. Reactogenicity events will also be evaluated by injection site examination on visits at D0, D1, D3 and D7. Volunteers will be also asked to report local and systemic AEs developing the day of a blood draw.