Correct answer can not be given for the above question. As number of bacteria varies from person to person. In the same person at different times, say before bath and after bath. Bacteria are more in axilla and groin, as compared to uncovered area.
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50 million
Skin usually covers about 2 square meters.
its a bout 100,000
you need 600 brick for a single skin wall 1 square meter and 1200 for a double skin wall
bacteria enter the body through a cut, scratch, insect bite, surgical wound, or other skin injury. Once the bacteria enter the lymphatic system, they multiply rapidly and follow the lymphatic vessel like a highway