HIV-2 infection
What is HIV-2 infection?
HIV-2 infection is caused by the human immunodeficiency virus type 2. This virus attacks your immune system and weakens your ability to fight infections. HIV-2 is less common than HIV-1 and mostly found in West Africa.
HIV-2 progresses more slowly than HIV-1 in most people. Without treatment, the virus can eventually damage your immune system enough to cause AIDS. Early detection and treatment help people with HIV-2 live long and healthy lives.
HIV-2 spreads through contact with infected blood, sexual fluids, or from mother to baby during pregnancy or breastfeeding. The virus cannot survive long outside the body. It does not spread through casual contact, hugging, or sharing food.
Symptoms
- Fever and chills within 2 to 4 weeks of infection
- Swollen lymph nodes in your neck, armpits, or groin
- Sore throat and mouth ulcers
- Muscle aches and joint pain
- Night sweats and fatigue
- Rash on your torso or face
- Headache and nausea
- Weight loss over time
- Frequent infections that take longer to heal
Many people have no symptoms for years after initial infection. Early symptoms may feel like the flu and go away on their own. Regular testing is the only way to know your status for certain.
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Causes and risk factors
HIV-2 infection happens when the virus enters your bloodstream. The most common ways include unprotected sex with an infected person, sharing needles or syringes, and mother-to-child transmission during pregnancy, birth, or breastfeeding. Blood transfusions are now rare sources of infection due to screening.
Your risk increases if you have multiple sexual partners, have other sexually transmitted infections, or use injection drugs. People from or with partners from West Africa have higher risk. Healthcare workers exposed to infected blood or body fluids also face increased risk.
How it's diagnosed
HIV-2 infection is diagnosed through blood tests that detect HIV antibodies, antigens, or both. The 4th generation HIV test can detect both HIV-1 and HIV-2 infections. This test looks for HIV antigens that appear 2 to 4 weeks after infection and antibodies that develop later.
Rite Aid offers 4th generation HIV testing through our preventive health service. If your initial test is positive, your doctor will order follow-up tests to confirm the diagnosis. Additional testing helps determine your viral load and CD4 cell count to guide treatment decisions.
Treatment options
- Antiretroviral therapy with medications that control viral replication
- Regular monitoring of viral load and CD4 cell counts
- Medications to prevent opportunistic infections
- Nutritious diet rich in fruits, vegetables, and lean proteins
- Regular exercise to maintain immune function and overall health
- Stress management through meditation, yoga, or counseling
- Avoiding smoking, excessive alcohol, and recreational drugs
- Safe sex practices to prevent transmission to partners
- Regular medical checkups every 3 to 6 months
- Vaccination against preventable infections like flu and pneumonia
Need testing for HIV-2 infection? Add it to your panel.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
HIV-2 is less common and progresses more slowly than HIV-1. HIV-2 is found mostly in West Africa, while HIV-1 is more widespread globally. Both types attack the immune system, but HIV-2 typically has lower viral loads and slower decline in CD4 cells.
The 4th generation HIV test can detect HIV-2 antigens as early as 2 to 4 weeks after infection. Antibodies typically appear within 3 to 12 weeks after exposure. Testing too early may produce false negatives, so repeat testing may be needed if exposure was recent.
There is currently no cure for HIV-2 infection. However, antiretroviral therapy can control the virus and keep it at undetectable levels. With proper treatment, people with HIV-2 can live long, healthy lives and reduce transmission risk to nearly zero.
HIV-2 is generally less contagious than HIV-1 due to lower viral loads. However, it can still spread through the same routes including unprotected sex, shared needles, and mother-to-child transmission. Safe practices are essential to prevent transmission of either type.
Anyone with risk factors should get tested, including those with multiple partners, injection drug users, and people with sexually transmitted infections. Those from or with partners from West Africa should also consider testing. The CDC recommends testing at least once for everyone aged 13 to 64.
A positive screening test requires confirmation with additional testing to determine if you have HIV-1, HIV-2, or both. Your doctor will order follow-up tests to measure viral load and CD4 cell count. Early treatment with antiretroviral therapy can begin immediately to protect your immune system.
Yes, with proper treatment and medical care, you can live a long and healthy life. Antiretroviral therapy keeps the virus under control and prevents progression to AIDS. Regular monitoring, healthy lifestyle choices, and adherence to medication are key to managing HIV-2 successfully.
Consistent condom use greatly reduces transmission risk during sex. Taking antiretroviral therapy as prescribed can make your viral load undetectable, which means you cannot transmit the virus sexually. Your partner may also consider pre-exposure prophylaxis for additional protection.
CD4 cells are white blood cells that help your immune system fight infections. HIV-2 attacks and destroys these cells over time. Monitoring your CD4 count helps doctors assess your immune system health and determine the best treatment approach.
You must disclose your status to sexual partners and healthcare providers. Some states have laws requiring disclosure to partners before sexual contact. Telling close friends or family is a personal choice, but having support can help with managing your health and treatment.