Safety of inactivated monovalent pandemic (H1N1) 2009 vaccination during pregnancy: A population-based study in Taiwan

Influenza virus infection in pregnancy: a review

“…The results are presented in Figure . In total, 100 studies were included in the review . Several studies provided data on maternal morbidity and mortality, pregnancy outcome and treatment.…”

Congenital anomalies: Case definition and guidelines for data collection, analysis, and presentation of immunization safety data

“…Since March 2014 there have been at least three retrospective studies published investigating congenital anomaly outcomes following monovalent influenza A (H1N1) vaccines [23], [24], [25]. The largest of the three studies was conducted in Lombardy, Italy, during the pandemic period (October 1, 2009–September 30, 2010) and included 6246 pregnant women immunized with a MF59 adjuvanted pandemic A (H1N1) vaccine [24].…”

Stillbirth: Case definition and guidelines for data collection, analysis, and presentation of maternal immunization safety data

“…One review paper describes that influenza vaccination might decrease the incidence of adverse outcomes of pregnancy such as stillbirth, as a result of the prevention of influenza infection related inflammation [61]. These findings were generalizable to monovalent influenza A (H1N1) vaccines, with the majority of evidence obtained for women immunized during their 2nd or 3rd trimester of pregnancy [61], [62], [63], [64], [65], [66], [67], [68], [69], [70], [71], [72], [73], [74], [75].…”