Transcript Infectious Diseases

Infectious
Diseases
What Does Infectious Mean?
 Infectious

or Communicable Disease
Spread from one living thing to another or
through the environment.
 Pathogen


Causes a disease
Virus, Bacteria
 Fungi,
Protozoan, Parasites
Differences?
 Contagious
to person
 Not
Disease is spread from person
ALL infectious diseases are
contagious!!
Virus

Small genetic material
surrounded by coating.

May prevent with
vaccine






Single-celled organism

Cure with antibiotics

Weakened pathogen to
stimulate immune system
Examples:

Bacteria
Influenza (flu)
Common Cold
AIDS
Smallpox

Kills or slows growth of
bacteria
Examples:




Strep Throat
Tuberculosis
Lyme Disease
Bacterial Pinkeye
Fungi
• Plantlike
organisms
• Mold/Yeast
• Examples
include
Athlete’s Foot
Protozoan
• Single-Celled
organisms
larger than
bacteria
• Usually from
water
• Amebic
Dysentery is an
example.
Parasites
• Organism that
lives off of host
• Tapeworm or
Malaria are
examples.
Transmission
 Direct


Contact
Touching, Sneezing/Coughing, Sharing
Person, Animal, Insect
 Indirect

Contact
Objects
Common Viral Infections
 Common


Inflammation (irritation) of nose and throat
Symptoms: runny/stuffy nose, sneezing, sore
throat, headache
 Influenza


Cold
(Flu)
Respiratory System (lungs)
Symptoms: high fever, chills, dry cough,
joint/muscle pain, extreme fatigue
Common Bacterial Infections
 Strep

Throat
Sore throat, fever, enlarged lymph nodes in
neck
 Tuberculosis



Respiratory System (lungs)
Cough, fever, sweats
Treatment requires 5 antibiotics
 Sinus


Infections
Congestion, runny nose
Usually not contagious
Critical Question
 You
wake up one morning with a
headache, body aches, and a fever. You
think you might be coming down with
something.
Analyze the relationship between healthful
behaviors you can practice and the ways
that infectious diseases are spread. What
should you do? (7 sentences)
Tips to Avoid Diseases
 Wash
hands
 Don’t share food/objects
 Cover skin to avoid parasites
 Eat balanced diet
 Prepare food safely
 Manage stress
 Avoid sick people
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Botulism
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Cholera
19.
Diphtheria
20.
Hansen’s Disease (Leprosy)
21.
Whooping Cough (Pertussis)
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Pinkeye (Contagious Conjunctivitis)
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Plague
Scarlet Fever
24.
Tetanus
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Typhoid Fever
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Chickenpox
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Measles (Rubeola)
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Mumps
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Polio (Poliomyelitis)
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Rabies
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Rubella (German Measles)
Athlete’s Foot
Ringworm
Thrush (Oropharyngeal Candidiasis)
Amebic Dysentery (Amebiasis)
Giardiasis
Malaria
Sleeping Sickness (African
Trypanosomiasis)
Lyme Disease
Meningitis
Yellow Fever
Hepatitis A
Pneumonia
Tuberculosis
Smallpox
Rocky Mountain Spotted Fever
Typhus