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HIV is a retrovirus that primarily infects components of the human immune system such as CD4 + T cells, macrophages and dendritic cells. It directly and indirectly destroys CD4 + T cells. [88] HIV is a member of the genus Lentivirus, [89] part of the family Retroviridae. [90] Lentiviruses share many morphological and biological characteristics.
HIV is commonly transmitted via unprotected sexual activity, blood transfusions, hypodermic needles, and from mother to child. Upon acquisition of the virus, the virus replicates inside and kills T helper cells , which are required for almost all adaptive immune responses .
Two types of HIV have been characterized: HIV-1 and HIV-2. HIV-1 is the virus that was initially discovered and termed both lymphadenopathy associated virus (LAV) and human T-lymphotropic virus 3 (HTLV-III). HIV-1 is more virulent and more infective than HIV-2, [20] and is the cause of the majority of HIV infections globally. The lower ...
Joining us now to discuss why HIV remains such a challenging virus to treat and cure is Dr. Sharon Lewin, Professor of Medicine at Doherty Institute at University of Melbourne Australia. Thanks ...
The trial followed 4758 heterosexual couples in Kenya and Uganda, in which one individual was HIV positive and the other was HIV negative. [97] The uninfected (HIV negative) partner was given either a once-daily tenofovir tablet, a once-daily combination tablet of tenofovir and emtricitabine, or a placebo tablet containing no antiretroviral drug.
HIV testing is an essential gateway to HIV prevention, treatment, care and support services. [31] It is crucial to have HIV tests available for individuals worldwide since it can help individuals detect the status of their disease from an early onset, seek help, and prevent further spread through the practice of suggestive safety precautions.
An analysis of 2024 Google search data revealed the top health questions asked by Americans. A registered nurse provides answers to the seven most common inquiries.
There’s no single explanation for why addiction treatment is mired in a kind of scientific dark age, why addicts are denied the help that modern medicine can offer. Family doctors tend to see addicts as a nuisance or a liability and don’t want them crowding their waiting rooms. In American culture, self-help runs deep.