Girls, and Boys, Why do Doctors and Nurses wear masks and gloves etc, when they are preforming surgery, for example open heart surgery, brain surgery?

lecher
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So, the protective gear that doctors and nurses wear give themselves protection as well as keep them from infecting patients with any germs they may have?
Girls, and Boys, Why do Doctors and Nurses wear masks and gloves etc, when they are preforming surgery, for example open heart surgery, brain surgery?
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