1. Colonization is the presence of bacteria on the skin without causing disease.
2. colonization in a person who's not hand-washed is obviously more than that of the person's hand washed.
3. A person who has not washed hand posses many contaminations due to day to day activities like handshaking with other people causes cross-contamination, handling the utensils, use of hands during coughing and sneezing. This results in many bacteria (Enterococcus sp., Enterobacter sp.) to survive on hand if not washed.
4. While the person who has washed his hands with soap water is effective in reducing contamination compared to no hand washing.
that is why the colonization between two is so different.
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