Viruses:

Small living particles (much smaller than bacteria) that can infect cells and change how the cells function. Infection with a virus can cause a person to develop symptoms. A virus is a noncellular entity composed merely of genetic material (DNA or RNA) surrounded by a protein envelope. Viruses can reproduce only within living cells into which they inject their genetic material. The viral genes then subvert an infected cell's normal chemical processes to create new virus particles, usually killing the cell in the process. The disease and symptoms that are caused depend on the type of virus and the type of cells that are infected.

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Information and definitions of the medical conditions and diseases have been taken from various reliable government publications and we have done our best to verify their accuracy. If you feel any of the definitions are incorrect or needs to be updated please contact us and we will look into it.

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