In HIV-infected individuals, there is a gradual loss of immune cells (called CD4+ T-lymphocytes) and immune function.
The mechanisms by which HIV causes this immune deficiency are still not completely understood, although direct infection of CD4+ T-lymphocytes by HIV certainly plays a role.
HIV-1 attacking the CD4-lymphocytes
World’s AIDS map Observations- Most affected regions- USA, South Africa ,Eastern Africa, India Severely affected regions- China , Russia, Brazil, Vietnam Less affected regions –Australia, Saudi Arabia, Afghanistan
Globally, the most common route of HIV transmission is through sexual contact.
The use of condoms is vital in helping to prevent the sexual transmission of HIV, the virus that causes AIDS.
Condoms also help to prevent infection by STDs, such as gonorrhoea, Chlamydia, and hepatitis B.
“ AIDS: Your Problem, Control With Condoms”. A road sign in Botswana.
Condom A condom awareness programme in Argentina. A condom prevents the transmission of AIDS through the sexual contact
Such groups have helped raise public awareness about acquired immune deficiency syndrome (AIDS), which affects millions of people worldwide. These are some of the birth control devices which prevent the contact of the egg and the sperm.
Many cases of HIV transmission occurred through contaminated blood and transfusions which is prevented by screening and heat procedures. HIV-infected mothers should avoid breast-feeding their infant if replacement feeding is acceptable, feasible, affordable, sustainable and safe