Quadrivalent Influenza mRNA Vaccine(Sanofi Pasteur)

The Sanofi Pasteur Fluzone Intradermal Quadrivalent vaccine (Fluzone QIV-ID) Pregnancy Registry will be a prospectively recruited pregnancy surveillance program designed to collect to collect and analyze information on vaccine exposures, pregnancy outcomes, and fetal and offspring outcomes on pregnant women exposed to Fluzone QIV-ID vaccine.

The aim of the study is to evaluate a prototype quadrivalent influenza vaccine (QIV), the licensed 2010-2011 trivalent influenza vaccine (TIV) containing the primary B strain, and the investigational TIV containing the alternate B strain in adult subjects.
Primary Objective:
* To demonstrate non-inferiority of antibody responses to QIV compared with licensed 2010-2011 TIV (containing the primary B strain) and investigational TIV (containing the alternate B strain) as assessed by geometric mean titer (GMT) ratios for each of the four virus strains separately among subjects 65 years of age and older
Observational Objective:
* To describe the safety profiles of TIV among subjects 18 years of age and older and QIV in subjects 65 years and older, as assessed by solicited injection site and systemic adverse events (AEs) collected for 7 days post-vaccination, unsolicited adverse events collected from 21 days post-vaccination, and adverse events of special interest and serious adverse events (SAEs) collected from Visit 1 to Visit 2.