HIV Viral Load vs CD4 Count
They help detect the disease condition and treatment efficacy.
Why count viral load in HIV infection?
The virus is counted to find out if the disease is in control.
The lowered number tells the efficacy of medicine.
The high count tells the uncontrolled growth.
Why is CD4 count done?
It is done to know the status of the patient’s recovery.
It helps decide whether the immune system is recovering.
It is the count of immune cells.
HIV infection damages the immune cells.
What are the uses of these two numbers?
These help to evaluate the following:
- Is the patient responding well?
- Is the immune system recovering?
- Is the risk of infection high?
- Is the disease under control?
Is it safe to have sex when viral load is reduced to undetectable levels?
Yes. Under the scientific consensus of U=U (Undetectable = Untransmittable), individuals with sustained undetectable viral loads cannot sexually transmit HIV.
However, an undetectable viral load does not protect against other sexually transmitted infections (STIs) or pregnancy; barrier protection remains recommended.
Is it possible to have an undetectable viral count and still have a low CD4 count?
This happens because antiretrovirals may rapidly suppress viral replication, lowering the count.
The immune system recovery may not be that rapid.
It may take longer for CD4 cells to recover.
The immune system recovery depends on several factors:
- Ongoing inflammation
- Older age
- Persistent immune activation
- Concurrent infections
- Stress or lack of sleep
Is an undetectable viral load an indication of HIV cure?
It states that the virus is not able to replicate.
The virus count has reduced to undetectable levels.
It may not cause any adverse complications.
It does not ensure that a person is free of the virus.
Why does an HIV test remain positive at an undetectable viral load?
The HIV test identifies the antibodies in the blood.
The antibodies are produced by the immune system.
These remain lifelong.
Can HIV return after successful treatment?
The viral count may get reduced to undetectable levels.
The virus remains hidden inside the body.
It integrates reverse-transcribed viral DNA into host immune cells (latent reservoirs).
When the medicine is stopped, the hidden virus starts replicating to cause an infection.
Antiretroviral therapy (ART) is a lifelong treatment for all individuals diagnosed with HIV.
The role of antiretrovirals in HIV treatment
Antiretrovirals stop viral replication and inhibit its rapid increase.
These interfere with the enzyme pathway required for HIV multiplication.
They help reduce the viral load to undetectable levels.
Examples of antiretroviral combinations-
- Abacavir/lamivudine (Abakast L)
- Lopinavir/Ritonavir (Lopikast)
- Tenofovir disoproxil fumarate/Lamivudine (Tudobest-L)
Aprazer Healthcare: Improving Access to HIV Treatment
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We manufacture generic drugs in multiple therapeutic segments.
Our antiretroviral class provides affordable fixed–dose combinations for HIV treatment.
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