Human immunodeficiency virus (HIV) is a serious, contagious virus that causes acquired immunodeficiency syndrome (AIDS ).
HIV (human immunodeficiency virus) is a virus that attacks the immune system, the body's natural defence system. Without a strong immune system, the body has trouble fighting off disease. Both the...
AIDS
Same way AIDs is. Sexual contact.
i doesn't have a phylum because it is a virus and therefore not a animal.