It has also been proven scientifically that semen,because it is a rich protein substance,is one of the body fluids that can harbour enough of the virus to cause it to be transmitted during sexual intercourse.

• 科学也证明，由于精液中含有丰富的蛋白质，因而是一种含有足够的病毒的体液，能在性交过程中进行传播。