London, October 31: Kissing is considered a symbol of love and affection, but scientists claim it may have evolved for reasons less fascinating and more practical.
The scientists believe kissing is developed to pass on a dangerous bug called cytomegalovirus from man to woman.
The virus, which lurks in saliva, normally causes no problem but can prove dangerous during pregnancy, killing the unborn baby or causing birth defects, including problems ranging from deafness to cerebral palsy, claim the scientists.
–PTI