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A Comprehensive Guide to HIV and AIDS
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What is HIV?

HIV is a virus that damages the immune system. The immune system helps the body fight off infections. Untreated HIV infects and kills CD4 cells, which are a type of immune cell called T cells. Over time, as HIV kills more CD4 cells, the body is more likely to get various types of infections and cancers.

HIV is transmitted through bodily fluids that include:

  • blood
  • semen
  • vaginal and rectal fluids
  • breast milk

The virus doesn’t spread in air or water, or through casual contact.

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Original Source:https://www.healthline.com/health/hiv-aids#What-is-HIV?