Herd immunity after pneumococcal conjugate vaccination – Author's reply
- 作者：Carlos G Grijalva ; J Pekka Nuorti ; Kathryn M Edwards ; Marie R Griffin
- 关键词：Biomechanics ; Knee ; Cartilage
- 刊名：The Lancet
- 出版年：2007
- 期刊代码：182_01406736
- 类别：med
- 出版时间：21 July 2007-27 July 2007
- 卷：370
- 期：9583
- 页码：219-220
- 文件大小：52 K
摘要
In-vitro fertilisation has been done for nearly 30 years; in developed countries at least 1%of births are from assisted reproductive therapies (ART). These children now represent a substantial proportion of the population but little is known about their health. Some of the morbidity associated with ART does not result from the techniques but from the underlying health risks of being subfertile. Much of the amplified risk associated with ART is related to high birth order. However, risk of intrauterine and subsequent perinatal complications is enhanced after ART, and urogenital malformations can be present in boys, even in singleton infants. No increase in discord or other difficulties within families has been recorded. Long-term follow-up of children born after ART to reproductive age and beyond is necessary.