重温风疹(德国麻疹)。
Rubella (German measles) revisited.
机构信息
Department of Pediatrics, University of Calgary, Canada.
Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong.
出版信息
Hong Kong Med J. 2019 Apr;25(2):134-141. doi: 10.12809/hkmj187785. Epub 2019 Apr 10.
Rubella is generally a mild and self-limited disease in children. During pregnancy, rubella can have potentially devastating effects on the developing fetus. Postnatal rubella is transmitted primarily by inhalation of virus-laden airborne droplets or direct contact with infected nasopharyngeal secretions. In susceptible pregnant women, the virus may cross the placenta and spread through the vascular system of the developing fetus. Postnatally acquired rubella typically begins with fever and lymphadenopathy, followed by an erythematous, maculopapular rash. The rash classically begins on the face, spreads cephalocaudally, becomes generalised within 24 hours, and disappears within 3 days. Maternal rubella, especially during early pregnancy, may lead to miscarriage, intrauterine fetal death, premature labour, intrauterine growth retardation, and congenital rubella syndrome. Cataracts, congenital heart defects, and sensorineural deafness are the classic triad of congenital rubella syndrome and they typically occur if the fetal infection occurs in the first 11 weeks of gestation. Laboratory confirmation of rubella virus infection can be based on a positive serological test for rubella-specific immunoglobulin M antibody; a four-fold or greater increase in rubella-specific immunoglobulin G titres between acute and convalescent sera; or detection of rubella virus RNA by reverse transcriptase-polymerase chain reaction. Treatment is mainly symptomatic. Universal childhood immunisation and vaccination of all susceptible patients with rubella vaccine to decrease circulation of the virus are cornerstones to prevention of rubella and, more importantly, congenital rubella syndrome.
风疹通常是儿童中一种轻度和自限性疾病。怀孕期间,风疹可能对发育中的胎儿产生潜在的破坏性影响。产后风疹主要通过吸入含有病毒的飞沫或直接接触感染的鼻咽分泌物传播。在易感染的孕妇中,病毒可能穿过胎盘并通过发育中胎儿的血管系统传播。产后获得的风疹通常始于发热和淋巴结病,随后出现红斑、斑丘疹皮疹。皮疹经典地从面部开始,向头足方向扩散,在 24 小时内变得普遍,并在 3 天内消失。母亲的风疹,特别是在妊娠早期,可能导致流产、宫内胎儿死亡、早产、宫内生长迟缓以及先天性风疹综合征。白内障、先天性心脏缺陷和感觉神经性耳聋是先天性风疹综合征的经典三联征,如果胎儿感染发生在妊娠的前 11 周,它们通常会发生。风疹病毒感染的实验室确认可以基于风疹特异性免疫球蛋白 M 抗体的阳性血清学检测;急性和恢复期血清中风疹特异性免疫球蛋白 G 滴度增加四倍或以上;或通过逆转录聚合酶链反应检测风疹病毒 RNA。治疗主要是对症治疗。普遍的儿童免疫接种和对所有易感患者进行风疹疫苗接种以减少病毒传播是预防风疹的基石,更重要的是,是预防先天性风疹综合征的基石。