期刊
HUMAN VACCINES & IMMUNOTHERAPEUTICS
卷 14, 期 3, 页码 758-766出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/21645515.2017.1345385
关键词
influenza; pregnancy; immunization; laboratory-confirmed; influenza infection; infants
资金
- African Research Chairs Initiative of the Department of Science and Technology
- National Research Foundation in Vaccine Preventable Diseases
- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit
Infants younger than 6months of age are at particular risk for serious illness from influenza infection. Currently available influenza vaccines are, however, not licensed for use in infants <6months old. Influenza vaccination during pregnancy elicits robust antibody responses in the women that will protect the infants against influenza infection during the first few months of life. We aimed to determine the impact of influenza vaccination during pregnancy to prevent laboratory-confirmed influenza infection and influenza-associated hospitalisations in infants <6months old.An electronic search identified all studies assessing the proposed outcomes in infants after administration of influenza vaccine during pregnancy. Two meta-analyses were performed accordingly to studies restricting the evaluation to influenza-associated hospitalisations or not.Four randomized control trials and 3 observational studies reported on the prevention of laboratory-confirmed influenza infection in infants <6months old. Maternal influenza vaccination was associated with a 48% [95% confidence interval (CI): 33 to 59] reduced risk of infants having laboratory-confirmed influenza infection. Four observational studies reported on the prevention of hospitalizations associated with laboratory-confirmed influenza infection and the pool estimate was 72% (95%CI: 39% to 87%).Receipt of influenza vaccine during pregnancy was associated with decreased risk of laboratory-confirmed influenza infection in the infants.
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