Understand the Difference Between HIV and AIDS

Many people still use the terms HIV and AIDS as if they were the same thing, but there is an important difference.

HIV (Human Immunodeficiency Virus) is the virus that attacks the immune system, mainly the defense cells called CD4. AIDS, also called AIDS (Acquired Immunodeficiency Syndrome), is the most advanced stage of infection, when the body becomes weakened and more vulnerable to infections and certain types of cancer.

In other words:

  • A person can have HIV and not have AIDS.

  • With early diagnosis and appropriate treatment, many people live decades without developing AIDS.

Nowadays, thanks to medical advances, HIV is no longer considered a death sentence and has become a treatable chronic condition when properly monitored.

How does HIV act in the body?

HIV invades cells responsible for defending the body and gradually weakens the immune system over time.

Without treatment, the body gradually loses the ability to fight viruses, bacteria, fungi, and other diseases. This facilitates the appearance of what are called opportunistic infections, which are diseases that take advantage of lowered immunity to develop.

As the disease progresses, simple infections can become serious.

That is why identifying HIV early makes all the difference.

How is HIV transmitted?

HIV can be transmitted mainly by:

  • Unprotected sexual relations;

  • Contact with contaminated blood;

  • Sharing syringes and needles;

  • From mother to baby during pregnancy, childbirth, or breastfeeding (when there is no treatment);

  • Contaminated transfusions (today extremely rare due to strict controls).

The virus is NOT transmitted by:

  • hug;

  • social kiss;

  • handshake;

  • sweat;

  • saliva;

  • sharing utensils;

  • swimming pool;

  • bathroom;

  • mosquito bite.

This point is important because there is still a lot of prejudice and misinformation on the subject.

What are the first symptoms of HIV?

In the first days or weeks after infection, some people may feel nothing. Others may experience symptoms similar to severe flu or a viral infection.

Initial signs may include:

  • fever;

  • sore throat;

  • swollen lymph nodes ("swollen glands");

  • spots on the body;

  • intense fatigue;

  • muscle pain;

  • headache;

  • night sweats;

  • diarrhea;

  • unexplained weight loss.

After this phase, the virus can remain silent for years.

It is precisely this that makes diagnosis so important: many people discover HIV only when their immunity is already severely compromised.

When to see a doctor to investigate HIV?

Some signs deserve attention, especially when they persist or appear without clear explanation:

  • significant weight loss;

  • frequent fever;

  • repeated infections;

  • recurrent candidiasis;

  • strange spots on the skin;

  • intense night sweats;

  • persistent fatigue;

  • prolonged diarrhea;

  • persistent swollen lymph nodes.

Furthermore, anyone who has had unprotected sexual relations should consider getting tested, even without symptoms.

Early diagnosis protects not only your own health, but also helps reduce transmission.

How is HIV diagnosed?

Tests have evolved greatly in recent years and today diagnosis can be made quickly and safely.

The main tests include:

Rapid test

  • Results in minutes;

  • Available at health units;

  • Done with a drop of blood or oral fluid.

Laboratory tests

The most commonly used today detect:

  • antibodies against HIV;

  • virus antigens;

  • or the viral genetic material itself.

Among the most well-known tests are:

  • HIV serology;

  • 4th generation test;

  • viral load;

  • CD4 count.

After a positive result, complementary tests help assess the stage of infection and define the most appropriate treatment.

What is AIDS?

AIDS is the stage when HIV has already caused a significant drop in immunity.

At this stage, the body becomes vulnerable to serious diseases, such as:

  • tuberculosis;

  • pneumonias;

  • meningitis;

  • toxoplasmosis;

  • certain types of cancer;

  • serious fungal infections.

But it is important to emphasize:
with appropriate treatment, many people never develop AIDS.

How does HIV treatment currently work?

Treatment is done with antiretroviral medications, known as ART.

These medications:

  • reduce the amount of virus in the body;

  • strengthen the immune system;

  • decrease the risk of transmission;

  • increase life expectancy and quality of life.

Today there are treatments that are much more modern, safe, and effective than decades ago.

In many cases:

  • the person takes only one tablet per day;

  • there are long-acting injectable therapies in some countries and specific contexts;

  • people can achieve undetectable viral load.

A very important concept today is:

"Undetectable = Untransmittable" (U = U)

When a person maintains appropriate treatment and sustained undetectable viral load, they do not transmit HIV through sexual contact.

This was one of the greatest revolutions in fighting HIV in recent decades.

Is there prevention for HIV and other STIs?

Yes, and prevention continues to be fundamental.

The main forms of prevention include:

  • use of condoms;

  • regular testing;

  • not sharing syringes;

  • appropriate treatment during pregnancy;

  • use of PrEP (Pre-Exposure Prophylaxis);

  • use of PEP (Post-Exposure Prophylaxis).

What is PrEP?

It is a preventive medication for people at higher risk of HIV exposure.

What is PEP?

It is an emergency medication used after possible exposure to the virus, ideally started within the first hours and within 72 hours.

In addition to HIV, these measures help prevent other Sexually Transmitted Infections (STIs), such as:

  • syphilis;

  • gonorrhea;

  • chlamydia;

  • viral hepatitis.

Prejudice is still one of the greatest challenges

Even with all medical advances, many people still avoid seeking help due to fear, shame, or misinformation.

Speaking about HIV and AIDS responsibly saves lives.

Early diagnosis reduces complications, improves quality of life, and interrupts transmission chains.

Correct information also combats prejudices.

Caring for sexual health is part of caring for health as a whole. Getting tested, using protection, and seeking medical guidance in case of any doubt are important and responsible actions.

This content is exclusively informative in nature and does not replace medical consultation, professional diagnosis, or specialized follow-up. In case of symptoms, risk exposure, or doubts about HIV, AIDS, or other STIs, seek a health professional or a care facility.

Dr. Rebeca Soares Andrade CRM- GO 39335