在国外确实是有这种例子的，根据维基百科。英文术语叫Neonatal herpes simplex。
我翻译几段给大家看看。
Neonatal herpes simplex is a rare but serious condition, usually caused by vertical transmission of herpes simplex virus from mother to newborn. Around 1 in every 3,500 babies in the United States contract the infection.
这是一种很少见但是很严重的病情，通常是母亲传染给新生儿的。在美国，每3500个新生儿中就有一例。（编注：这3500应该是包括健康的妈妈）
The majority of cases (85%) occur during birth when the baby comes in contact with infected genital secretions in the birth canal, most common with mothers that have newly been exposed to the virus (mothers that had the virus before pregnancy have a lower risk of transmission), an estimated 5% are infected in utero, and approximately 10% of cases are acquired postnatally. Detection and prevention is difficult because transmission is asymptomatic in 60% - 98%[12] of cases.
大部分（85%）的病例发生是新生儿在出生通道中接触到了母亲带病毒的体液，最常见的情况是妈妈刚刚被被感染了（妈妈如果在怀孕以前就被感染了，传染给小孩的概率要低一些），大约5%的传染发生在子宫， 大约10%的传染发生在新生儿出生后。 发现和防止母亲传染给孩子是困难的，因为60%－98%的案例中母亲是没有任何症状的。
