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How do viruses infect?

Оглавление

Viruses do not have the chemical machinery needed to survive on their own. Thus, they seek out host cells in which they can multiply. These viruses enter the body from the environment, soil, water or air or other individuals via nose, mouth, or any breaks in the skin and seek a cell to infect.

A cold or flu virus, for example, will target cells that line the respiratory or digestive tracts. The HIV that causes AIDS attacks the T-cells (a type of white blood cell that fights infection and disease) of the immune system.

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