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Can we prevent all pathogens in our environment? Do you need it at all? Part of the natural circumstance is that you have to carry some bacteria.
Regular washing can prevent most infections
Mark Twain (1835-1910) said, "The cleaner is all filthy." The discovery of germs bacteria has become a cultural concern for microorganisms. This fear is the reason why many consider their infants' need for constant shriek and try to isolate them carefully from the "flesh". Many people call the immune system a permanently acting surveillance, "sweeper", which recognizes and renders harmless bacteria, viruses, insects that are released into the body, and "various substances that are released into the body."