2. INFECTIOUS DISEASES:
Are caused by organims called
pathogens.
Bacteria; cause disease s suche as
tetanuns,conjuntivitis…
Viruses; cause diseases in human,
papiloma, AIDS…
3. HOW DO INFECTIOUS DISEASES SPREAD?
• An infectious diseases is contagius if it is transmitted
from one person to another.
• The pathogens usually enter the body through the
NOSE and MOUTH.
DID YOU KNOW?
• The body has natural defendes, such as the white
blood cells to protect itself
• The human body, the pathogen, often called a
microbe and the body reacts causing fever and
inflamation.
4. NON INFECTIOUS DISEASES:
Are not caused by organims , and therefone , cannot
be spread from person to person .
Allergy: is a reaction that some people have when they come into contac with
susbtances pollen, animal hair…
Heart disease: caused eating fast food often and weight problems .
Mental disease: such as depression, Alzheimer´s disease affect the nervous
system.
Diabetes: illnes that involves high amounts of sugar .
Cancer: in which the body´cells begin to develop in a different way and grow
uncont rollaby
