This is transmitted through the mouth. “Something happened five thousand years ago that allowed one strain of herpes to overtake all the others, possibly an increase in transmissions that could be kissing-related,” said Christiana Scheib of the University of Cambridge, UK.
The earliest known record of kissing is in a Bronze Age manuscript in South Asia. The scientists suspect that the kiss came to Europe with a migration movement from Eurasia. The rise of oral herpes may have coincided with the emergence of the cultural practice of kissing sexually and romantically. Even nowadays, the romantic kiss is not common in all parts of the world. A lot of kisses are distributed in the Middle East, North America and Europe in particular. In sub-Saharan African cultures, in New Guinea or in Central America, kissing, which is associated with love and sexuality, tends not to play a role.
Source: Nachrichten