{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T02:23:46Z","timestamp":1767666226423},"reference-count":39,"publisher":"Cambridge University Press (CUP)","issue":"14","license":[{"start":{"date-parts":[[2017,9,11]],"date-time":"2017-09-11T00:00:00Z","timestamp":1505088000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":["www.cambridge.org"],"crossmark-restriction":true},"short-container-title":["Epidemiol. Infect."],"published-print":{"date-parts":[[2017,10]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>Seasonal influenza can cause significant morbidity in pregnant women. Much of the existing epidemiological evidence on influenza during pregnancy has focused on the 2009 A\/H1N1 pandemic. To measure the epidemiological characteristics of seasonal influenza infection among pregnant women and the impact on infant health, a cohort of 86 779 pregnancies during the influenza season (2012\u20132014) was established using probabilistic linkage of notifiable infectious disease, hospital admission, and birth information. A total of 192 laboratory-confirmed influenza infections were identified (2\u00b72 per 1000 pregnancies), 14\u00b76% of which were admitted to hospital. There was no difference in the proportion of infections admitted to hospital by trimester or subtype of infection. Influenza B infections were more likely to occur in second trimester compared with influenza A\/H3N2 and influenza A\/H1N1 infections (41\u00b73%, 23\u00b76%, and 33\u00b73%, respectively), and on average, infants born to women with influenza B during pregnancy had 4\u00b70% (95% CI 0\u00b73\u20137\u00b76%) lower birth weight relative to optimal compared with infants born to uninfected women (<jats:italic>P<\/jats:italic> = 0\u00b703). Results from this linked population-based study suggest that there are differences in maternal infection by virus type and subtype and support the provision of seasonal influenza vaccine to pregnant women.<\/jats:p>","DOI":"10.1017\/s0950268817001972","type":"journal-article","created":{"date-parts":[[2017,9,11]],"date-time":"2017-09-11T10:37:07Z","timestamp":1505126227000},"page":"2930-2939","update-policy":"http:\/\/dx.doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":21,"title":["Epidemiology of seasonal influenza infection in pregnant women and its impact on birth outcomes"],"prefix":"10.1017","volume":"145","author":[{"given":"A. K.","family":"REGAN","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H. C.","family":"MOORE","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S. 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