Explain how microorganisms affect humans. Make sure you talk about bacteria and yeast. Do they affect our environment, health, or food

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Microorganisms such as bacteria, viruses, yeasts and molds can spoil food and may cause a risk to anyone's health. Microbes cause infectious diseases such as flu and measles. But you do have to remember that less than 1% of bacteria can invade our body (the host) and make us ill. So even if it is 1%, that's still 1% that can harm you.

Some examples of how microorganisms affect humans and how they can enter through your body:

Respiratory tract (mouth and nose): Influenza virus which causes the flu.

Gastrointestinal tract (mouth oral cavity): Vibrio cholerae which causes cholera.

Urogenital tract: Escherichia coli which causes cystitis.

Breaks in the skin surface: Clostridium tetani which causes tetanus.

wellness is the state of being in good health, especially as an actively pursued goal.