What you need to know about CD4 count and viral load
When one gets infected by HIV, the virus weakens the immune system. This may result in a decrease in CD4 count, which opens room for opportunistic infection.
A CD4 count tells you how many CD4 cells are in a drop of blood. The more the CD4 cells, the better.
Viral load measures how much HIV is there in a drop of blood.
A viral load test shows how much HIV is in a small sample of blood.
The lower the viral load the better. The aim of HIV treatment is to reduce viral load to a level which is too low to be measured by standard tests. This is called an ‘undetectable’ viral load.
This means HIV is still present in your body, but at a low level.
Source: Wikipedia
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