There are more than hundred english-english dictionaries in the world. According to merriam-websters website: Webster's Third New International Dictionary, Unabridged, together with its 1993 Addenda Section, includes some 470,000 entries.
Most commonly, HIV infection is spread by having sex with an infected partner. The virus can enter the body through the lining of the vagina, vulva, penis, rectum, or mouth during sex. Although vaginal and anal intercourse are the primary risk factors, oral sex transmission is also possible.
1 Currently, HIV-1 is the predominant subtype that causes HIV/AIDS. 2  AIDS stands for the acquired immunodeficiency syndrome. 3  HIV causes AIDS and occurs when the virus has destroyed so much of the body's defenses that immune-cell counts fall to critical levels or certain life-threatening infections or cancers develop.n order to understand HIV and acquired immunodeficiency syndrome (AIDS), it is important to understand the meanings behind these terms and the difference between them: 1  HIV stands for the human immunodeficiency virus. 2  It is one of a group of viruses known as retroviruses.