What is hiv

Understanding HIV

HIV (Human Immunodeficiency Virus) is a retrovirus that infects human cells, particularly CD4+ T cells, which are crucial components of the immune system. The virus replicates inside these cells, destroying them and progressively weakening the body's ability to fight off infections and diseases. HIV transmission occurs through specific bodily fluids and contact with infected blood, making prevention strategies clear and effective.

Transmission Routes

HIV is primarily transmitted through unprotected sexual contact with an infected person, sharing needles or injection equipment with someone with HIV, and from a pregnant woman to her child during pregnancy, childbirth, or breastfeeding. Contrary to common misconceptions, HIV cannot be transmitted through casual contact, saliva, sweat, tears, or respiratory droplets. Understanding transmission routes is essential for prevention and reducing stigma.

Disease Progression

Without treatment, HIV typically progresses through three stages. Acute infection (first 2-4 weeks) causes flu-like symptoms. Chronic HIV (can last 10+ years) involves slow immune system decline with few symptoms. AIDS (Acquired Immunodeficiency Syndrome) occurs when CD4 count drops below 200 cells or opportunistic infections develop. Modern treatment prevents progression and maintains a normal lifespan.

Testing and Diagnosis

HIV testing can be done through blood tests, rapid tests, or home tests, with results available within minutes to days. Early testing is crucial because early treatment significantly improves health outcomes and reduces transmission risk. Most people with HIV can achieve an undetectable viral load within 6 months of starting antiretroviral therapy, meaning the virus is controlled and cannot be sexually transmitted.

Treatment and Management

Antiretroviral therapy (ART) involving a combination of medications can effectively suppress HIV viral load to undetectable levels. People taking ART as prescribed can have a normal lifespan and undetectable viral loads mean they cannot transmit HIV sexually (U=U). Additionally, PrEP (pre-exposure prophylaxis) and PEP (post-exposure prophylaxis) are preventive medications that can reduce infection risk for high-risk individuals by up to 99% when taken correctly.