HIV and AIDS - الأيدز - الفارق بين مصاب بفيروس (الأتش أى فى) ومريض الأيدز #drhelal

The human immunodeficiency virus is a lentivirus that causes HIV infection and over time acquired immunodeficiency syndrome HIV (human immunodeficiency virus) is a virus that attacks the immune system, the body's natural defense system. Without a strong immune system, the body has trouble fighting off disease. Both the virus and the infection it causes are called HIV. The immune system protects the body from germs such as bacteria, fungi, and other viruses. When the immune system loses too many CD4 cells, it becomes weak and is unable to fight off germs, leading to opportunistic infections (OIs) that can cause serious illness or death. But having HIV doesn't mean you have AIDS. Even without treatment, it takes a long time for HIV to progress to AIDS—usually 10 to 12 years.