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在妊娠的最初11周内,原发风疹中约90%会引起严重的胎儿损害.在妊娠四个月时,胎儿感染的风险降低到50%左右,畸形一般不太严重,妊娠四个月以后,仍有胎儿感染,但很少引起危害.在英格兰和威尔士大多数并发风疹的妊娠在妊娠12周内都终止了妊娠,这是因为有宫内感染的风险,并不是一定感染,所以使一些无感染的胎儿流产了.如果在宫内就可以确定或排除胎儿感染,那就有可能更好地选择.检测这种感染有两种方法似乎是可行的,第一种是检查羊水中有无风疹病毒的存
In the first 11 weeks of gestation, about 90% of the primary rubella can cause severe fetal damage.At 4 months of gestation, the risk of fetal infection is reduced to about 50%, the deformity is generally less severe, and after four months of gestation , There are still fetal infections, but rarely cause harm in most of England and Wales rubella pregnancy termination of pregnancy within 12 weeks of gestation, this is because of the risk of intrauterine infection, not necessarily infected, so that some Uninfected fetuses have a miscarriage and if it is possible to determine or rule out a fetus infection in the uterus it may be a better choice.Two methods of detecting this infection appear to be feasible and the first is to check for the presence of amniotic fluid Rubella virus deposit