Under the Radar: Immune Evasion, Pathogenesis and Control of HIV Infection

Area of Science:

• Virology
• Immunology
• Public Health

Background:

• Human Immunodeficiency Virus (HIV), the cause of Acquired Immunodeficiency Syndrome (AIDS), emerged from zoonotic spillover events.
• HIV infects and destroys CD4 T cells, crucial for adaptive immunity, leading to immune system collapse.
• The virus's high genetic variability, especially in its envelope glycoprotein, hinders vaccine development.

Purpose of the Study:

• To summarize the current understanding of HIV pathogenesis, treatment, and prevention challenges.
• To highlight the impact of HIV on global health and the limitations of current interventions.
• To emphasize the need for improved strategies in combating the HIV/AIDS epidemic.

Main Methods:

• Review of scientific literature on HIV virology, immunology, and epidemiology.
• Analysis of the challenges in developing an effective HIV vaccine.
• Assessment of the successes and limitations of antiretroviral therapy.
• Examination of the global burden and transmission dynamics of HIV/AIDS.

Main Results:

• HIV's reverse transcriptase enables high sequence variability, complicating vaccine and treatment efforts.
• Antiretroviral drugs are effective in managing HIV but do not eradicate the virus due to latent reservoirs.
• Despite 40 years of research, an effective HIV vaccine has not been developed.
• HIV has infected over 90 million people and caused 44 million deaths globally.

Conclusions:

• Current antiretroviral therapies save lives but cannot eliminate HIV due to latent reservoirs.
• The development of an effective HIV vaccine remains a significant challenge.
• Improved deployment of existing preventative and therapeutic tools is crucial, especially in high-incidence areas.
• A comprehensive approach combining prevention, treatment, and ongoing research is essential to control the HIV/AIDS pandemic.