按照现行的标准，流感疫苗仅接种于年龄在6个月以上的人群。这也就是说“新近出生、且年龄在0～6个的婴儿并不能够接种流感疫苗”，这无疑增加了0～6个月的婴儿患流感的可能性。美国的研究人员通过分析1500个因流感住院的婴儿之资料后发现“孕妇在妊娠期接受流感疫苗接种不仅可保护自己免受流感病毒感染，亦可为出生后0～6个月的婴儿提供适度保护，即约可降低她们刚出生的孩子患流感之50％的概率”。究其原因，研究人员认为系“孕妇接种流感疫苗后所形成的对抗流感病毒之抗体通过胎盘输送给了胎儿，故胎儿在出生后的几个月内血液中仍含有一定量的抗病毒抗体，而有利于对抗流感病毒感染”。

更多资讯，请参阅原文：

Flu Shots for Pregnant Women Also Protect Newborns, Study Finds

Babies whose moms received vaccine nearly 50% less likely to be hospitalized with flu

WEDNESDAY, June 29 (HealthDay News) -- Giving flu shots to pregnant women also protects their newborns, researchers say.

Flu vaccination is recommended for anyone older than 6 months of age. But it is not approved for children younger than 6 months, who have the highest rates of flu hospitalization among all children.

In this study, U.S. researchers analyzed data from about 1,500 babies who were hospitalized for fever and/or respiratory symptoms in their first six months of life and underwent laboratory testing for influenza infection.

The results showed that infants born to mothers who received flu vaccination while pregnant were 45 to 48 percent less likely to be hospitalized with laboratory-confirmed influenza.

The study appears in the June issue of the American Journal of Obstetrics & Gynecology.

"It is recommended that all pregnant women receive the influenza vaccine during pregnancy because it is known that pregnant women have increased morbidity and mortality during pregnancy and in the immediate postpartum period if they get the flu," lead author Dr. Katherine A. Poehling, an associate professor of pediatrics at Wake Forest University Baptist Medical Center, said in a medical center news release.

"We also know that mothers pass antibodies through the placenta to help the baby," she added. "This study showed us that receiving the influenza vaccine during pregnancy not only protects the mother, but also protects the baby in the early months of life."

SOURCE: Wake Forest Baptist Medical Center, news release, June 23, 2011