This document discusses health, illness, and infectious diseases. It defines health as well-being and illness as the opposite of health. Infectious illnesses can be caused by bacteria, viruses, fungi, or other microorganisms. Bacteria are classified as either beneficial or harmful. Harmful bacteria can cause illnesses that affect different body systems like the nervous or digestive systems. Viruses are not living but use cells to replicate. Infectious diseases enter the body through wounds, respiration, or digestion. The document recommends healthy habits and outlines ways to prevent infectious illnesses through hygiene and vaccination. Treatment depends on the type of microorganism causing the infection.

1. HEALTH
LAURA PRIETO Y TERESA ORTEGA

2. HEALTH AND ILLNESS
o Health is the state of physical and
mental well-being.
o Illness is the opposite of healh.
o Symptoms , like coughs, pain and
fever, tell us that our body are ill.

3. HEALTHY HABITS
o Sleep 8 or 9 hours every night .
o Eat a balanced diet.
o Eat five meals a day and always eat breakfast .
o Wash our hands before meals.
o Breathe fresh air.

4. WHAT CAUSES AND ILLNESS
Types of illness:
 Non- infectious illnesses.
 Infectious illnesses: are caused by harmful bacteria
or viruses .They can be contagious or noncontagious.

5. BACTERIA
Bacteria are unicellular micro-organisms.
There are two types of bacteria:
Beneficial bacteria .
Harmful bacteria.

6. PATHOGENIC BACTERIA
 Bacteria meningitis :
• Affected area : nervous system.
 Salmonellosis :
• Affected area : digestive system.
 Bronchitis :
• Affected area : bronchi in the respiratory system.

7. OTHER MICRO-ORGANISMS
They can be unicellular or multicellular.
 Amoebae
 Plasmodia
 Candida ( yeast)
 Fungi

8. VIRUSES
 A virus is not a micro-organism . It causes an
infectious illnesses .
 is not a living thing but it needs cells to carry out its
life processes.

9. PREVENTING AND TREATING
INFECTIOUS ILLNESSES.
Pathogenic micro-organisms can enter our bodies in
different ways:
o Through the respiratory system.
o Through the digestive system.
o Through wounds and cuts.

10. HOW CAN PREVENT INFECTIOUS
 Disinfect wounds.
 Wash your hands before eating or handling food.
 Wash uncooked food.
 Cover your mouth when you cough or sneeze.
 Do not share eating utensils.

11. VACCINES
Vaccines introduce into our bodies the micro-
organism or virus that is making us ill.
The body reacts to the virus and produces
substances to destroy it.

12. HOW DO WE TREAT INFECTIONS
 Infections caused by bacteria are treated with
antibiotics.
 Infections caused by fungi are treated with antifungal medicines.
 Infections caused by viruses are only treated with
medicines that help to reduce symptoms.

13. FIRST AID KIT

14. THE