Download Infectious Disease

Infectious Disease
Pathogens (Germs)
• A virus, microorganism or another agent
that causes disease
Types of Pathogens
• Virus: invades body cells, virus reproduce and
break open the cell with virus moving on to other
cells to repeat the process…smallest and most
numerous
• Bacteria: produces infection causing poisonous
waste
• Fungus: attach to body cells causing damage and
robbing them of their nutrients
• Fungus growth
How the flu spreads!
• Flu Virus
• What happens
Infectious diseases spread
through two types of contact
• Direct Contact
• Indirect Contact
Direct Contact
• Person to person – shaking hands,
touching, etc…..
• Animal to person – bites or stings
• Mother to unborn child
Indirect contact
• inanimate objects…doorknobs, faucet
handle, table tops
• Water
• Air
• Food-temperature (under-cooked or
unwashed foods)
Methods to prevent spread of
germs
• Wash your hands frequently
• Get vaccinated (VIRUS)
• What is in a vaccine?
• Use antibiotics sensibly (Fungus-bacteria)
• Stay home if signs and symptoms of
infection
• Be smart when preparing food
Methods to prevent spread of
germs
v Keep Hot zones in home clean – areas
with concentration of bacteria – bathrooms
and kitchen
• Don’t share personal items- toothbrush,hair
brush, razor
Flu virus Image
• Swine flu virus
Body Defenses
• Blood
• Antibodies – white blood cells
• Skin
Anti-biotics
• Antibiotics are the first line of defense
against many infections
• overusing or misusing antibiotics can
cause more harm than good.
Antibiotic concerns
• Strains of bacteria can mutate (change) and,
over time, become resistant to a specific
antibiotic.
• The chance of this increases if a person
does not finish the course of antibiotics as
some bacteria may be left to develop
resistance.
Antibiotics are only effective
against
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bacterial infections
certain fungal infections
some kinds of parasites
Most infections result from either
bacteria or viruses.
Use of Antibiotics
• Antibiotics can't help you if a virus is
responsible for your illness
Symptoms of strep throat
• Strep caused by Virus or bacteria?
• Anatomy of a sore throat