simple kiss causing herpes on child

Sophie
Not sure if anyone has seen this yet but I was intrigued. 
The short version is that a relative with non visible herpes sores kissed the infant and it took 8 months for doctors to find out that this horrible rash she ended up with (that nearly cost the infant her life) was herpes she got from that relative. 
Thoughts? 
Do you let others kiss your children?