questions&answers about HIV/AIDS prepared by the World Health Organization can help you learn what you don’t know and correct mistakes.

1-What is HIV?

the virus that infects the immune system’s cells and destroys its functions. infection with the virus causes gradual deterioration of the immune system and leads to “immune deficiency”. the immune system is considered inadequate when it can no longer perform its role in fighting infection and disease. infections associated with severe immunodeficiency are known as opportunistic infections because they benefit from a weak immune system.

1-What is AIDS?

it is a term applied to the most advanced stages of HIV infection. More than 20 opportunistic infections or HIV are identified by the occurrence of any of the related cancers.

3 – How is HIV transmitted?

hiv can be transmitted through unprotected sexual intercourse (vaginal or anal) and oral sex with an infected person. contaminated needles, syringes, surgical equipment, or other sharp instruments can be transmitted through shared use. it can also be transmitted between a mother and her baby during pregnancy, childbirth and breast-feeding.

5 – How many people are HIV infected?

according to data from the World Health Organization and UNAIDS, 36.9 million people worldwide were living with HIV (1.8 million of children under 15 years old) by the end of 2017. in the same year, about 1.8 million more people were infected and 1 million died of HIV-related causes.