The diseases which are spread by sexual contact with an infected person are called sexually transmitted disease (or STD).
Some of the sexually transmitted diseases are:
Gonorrhoea and syphilis are caused by bacteria.
AIDS: AIDS disease is caused by a virus called HIV (Human Immunodeficiency Virus). AIDS damages the body’s immune system so that the body becomes weak and cannot protect itself against infection. So AIDS is a very dangerous disease which leads to death.
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