The document defines health and illness, noting that illness is indicated by symptoms like coughs or fever. It discusses infectious versus non-infectious illnesses, with infectious illnesses caused by bacteria or viruses that can be contagious or non-contagious. Examples of infectious illnesses are provided like bacterial meningitis, salmonellosis, and bronchitis. Pathogenic microorganisms can enter the body through the respiratory, digestive, or cuts and wounds. Preventative measures include disinfecting wounds, handwashing, washing food, covering coughs and sneezes, and not sharing utensils. Vaccines work by introducing a weakened form of the virus to produce antibodies to fight off future infections.

1. UNIT 1
BY MARÍA CABAÑAS
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2. • Health is the state of physical and mental well-being.
• Illness is the opposite of health.
• Symptoms like coughs,pain or fever,tell us that our
bodies are ill.
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11. Do physical activities.
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12. An illness can be infectious or non-infectious illness:
• Non-infectious illnesses have different causes.
• Infectious illnesses are caused by harmful bacteria or viruses.
Can be contagious or non-contagious.
-An illness is contagious when an ill person transmits the
illness to a healthy one.
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14. Bacterial meningitis:
Salmonellosis:
Bronchitis:
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15. Amoebae
Plasmodia
Candida(yeast)
Fungi
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17. -Pathogenic micro-organisms can enter in our bodies in
different ways:
• Through the respiratory system.
• Through the digestive system.
• Through wounds and cuts.
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Disinfect wounds.
Wash our hands before meals.
Wash uncooked food.
Cover your mouth when you cough or sneeze.
Don´t share eating utensils.
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19. • Vaccines introduce into our bodies the micro-organism or
virus that is making us ill.
-The body reacts and produces substances to destroy it.
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