HHV-6 transmission from parent to child.

Parents risk transmitting diseases to their children through excessive physical intimacy

"Yang said that two other common viruses transferred to children via saliva were HHV-6 and HHV-7, which typically affect all human beings before the age of two. In most cases, the viruses result in a sudden fever and a rash, although in rare cases, the child may also experience from febrile convulsions - a mild epileptic seizure after which a child will return to normal"

 http://www.globaltimes.cn/content/892431.shtml