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A. Publique, ?. Hôpitaux-de, and P. , DHU risks and pregnancy VT); and Inserm, CIC 1417, F-CRIN, Innovative clinical research network in vaccinology (I-REIVAC)); and UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (EPOPé) (OL) odile.launay@aphp.fr OL has been an investigator for Sanofi Pasteur MSD; reports personal fees from Sanofi Pasteur; and reports grants and non-fi nancial support from GlaxoSmithKline Biologicals, Sanofi Pasteur, and Pfi zer. VT declares no competing interests

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