Human immunodeficiency virus (HIV) is a virus that attacks the body's immune system, specifically targeting CD4 cells, which are crucial for fighting off infections. HIV can lead to Acquired Immunodeficiency Syndrome (AIDS), a condition in which the immune system becomes severely weakened, leaving the body vulnerable to infections and certain cancers. HIV is primarily transmitted through sexual contact, sharing needles, or from mother to child during childbirth or breastfeeding. While there is no cure for HIV, antiretroviral therapy (ART) can effectively control the virus, allowing people with HIV to live long and healthy lives. Prevention actions such as practicing safe sex, using clean needles, and HIV testing are essential for reducing the spread of the virus.

英語での「HIV」の定義と意味

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