World AIDS day !

You know ! December 1^St is the world AIDS day , I was surfing some websites , so I came cross one which asking what are you going to do regarding AIDS issue in it's annual day….so I'd liked to participate by increasing awareness regarding this disease.

First of all the term "AIDS" stands for "acquired immune deficiency syndrome  " and it's an advanced stage of the disease in HIV positive people , I mean the people who are infected by the virus which called "human immunodeficiency virus" (HIV), this virus from the medical view is a retrovirus which means it's an RNA virus and has the ability to reverse its RNA component to DNA component by using what's know as a reverse transcriptase enzymes.

When we talk about it's ways of transmission  from one to another, we can mention the sexual intercourse way which's the most common, and through using shared razor of infected person , also through the blood and blood products which include blood transfusion, IV drug users , and though occupational contaminated needle exposure, it's also transmitted vertically from the mother to the fetus if they are not treated, but it's not transmitted through casual contact  like kissing , shared utensils, or toilet seats .

The virus is affecting some specific cells according to some interactions between the virus and certain receptors on those cells which help the virus attaching and entering that cells , the cells include CD4 T helper cells , macrophages and neural dendritic cells  , once the virus enter the cells it starts to replicate rapidly to increase it's number, macrophage and dendritic cells act as a reservoir to the virus while the CD4 T helper cells being the victims , destruction of those cells leading to lose the "acquired immunity",  the immunity which being acquired through the exposure to the offenders, ultimately this result in suppression of the immune system , this makes the body easily attacked by opportunistic infections and some types of cancers. 

Prevention is the most useful way of fighting the virus and disease, this is through education about the virus and the disease also through safe sex measures , screening pregnant women , through screening blood donation , and drug prophylaxis in case of needle exposures.  

High-hopes