Quick Answer

HIV is caused by the human immunodeficiency virus, a retrovirus that attacks the immune system. It is transmitted through specific body fluids: blood, semen, vaginal fluids, rectal fluids, and breast milk. Without treatment, HIV can progress to AIDS, but modern antiretroviral therapy can suppress the virus to undetectable levels, preventing transmission and preserving health.

  • HIV is a retrovirus that targets CD4 cells, weakening the immune system.
  • Transmission requires direct contact with infected blood, semen, vaginal fluids, rectal fluids, or breast milk.
  • HIV is not spread through casual contact, air, water, or insect bites.
  • With effective treatment, viral load becomes undetectable, meaning HIV cannot be transmitted (U=U).
  • AIDS is the advanced stage of HIV infection, diagnosed by a very low CD4 count or certain infections.
  • There is no cure for HIV, but daily medication can manage the virus long-term.

Context Most Pages Skip

HIV stands for human immunodeficiency virus. It belongs to a class of viruses called retroviruses, which insert their genetic material into the host's DNA. The virus primarily infects CD4 cells (T-helper cells), which are crucial for immune defense. Over time, untreated HIV destroys these cells, leaving the body vulnerable to infections. Understanding how HIV is transmitted—and how it is not—is key to prevention. Modern treatment can reduce the virus to undetectable levels, meaning it cannot be passed to others (U=U). This guide explains the cause, transmission, and distinction between HIV and AIDS.

Frequently Asked Questions

What causes hiv?

HIV is caused by the human immunodeficiency virus, a retrovirus that attacks the immune system. It is transmitted through specific body fluids: blood, semen, vaginal fluids, rectal fluids, and breast milk. Without treatment, HIV can progress to AIDS, but modern antiretroviral therapy can suppress the virus to undetectable levels, preventing transmission and preserving health.

What causes aids?

HIV is caused by the human immunodeficiency virus, a retrovirus that attacks the immune system. It is transmitted through specific body fluids: blood, semen, vaginal fluids, rectal fluids, and breast milk. Without treatment, HIV can progress to AIDS, but modern antiretroviral therapy can suppress the virus to undetectable levels, preventing transmission and preserving health.

What virus causes aids?

HIV is caused by the human immunodeficiency virus, a retrovirus that attacks the immune system. It is transmitted through specific body fluids: blood, semen, vaginal fluids, rectal fluids, and breast milk. Without treatment, HIV can progress to AIDS, but modern antiretroviral therapy can suppress the virus to undetectable levels, preventing transmission and preserving health.

What virus causes hives?

HIV is caused by the human immunodeficiency virus, a retrovirus that attacks the immune system. It is transmitted through specific body fluids: blood, semen, vaginal fluids, rectal fluids, and breast milk. Without treatment, HIV can progress to AIDS, but modern antiretroviral therapy can suppress the virus to undetectable levels, preventing transmission and preserving health.

What causes chronic hives?

HIV is caused by the human immunodeficiency virus, a retrovirus that attacks the immune system. It is transmitted through specific body fluids: blood, semen, vaginal fluids, rectal fluids, and breast milk. Without treatment, HIV can progress to AIDS, but modern antiretroviral therapy can suppress the virus to undetectable levels, preventing transmission and preserving health.

What pathogen causes aids?

HIV is caused by the human immunodeficiency virus, a retrovirus that attacks the immune system. It is transmitted through specific body fluids: blood, semen, vaginal fluids, rectal fluids, and breast milk. Without treatment, HIV can progress to AIDS, but modern antiretroviral therapy can suppress the virus to undetectable levels, preventing transmission and preserving health.

Related Questions

⚕️ This page is educational and does not replace advice from a licensed clinician. If you may have been exposed to an STI, get tested — most infections are manageable, and many are fully curable.

Sources & Further Reading

Figures reflect CDC surveillance and WHO estimates; they are population statistics, not personal risk predictions.