Transcript 18.3 Viral Diseases

18.3 Viral Diseases
KEY CONCEPT
Some viral diseases can be prevented with vaccines.
18.3 Viral Diseases
Viruses cause many infectious diseases
• There are many examples of viral infections.
– common cold
Rhinovirus over 100 different types
18.3 Viral Diseases
Viruses cause many infectious diseases
• There are many examples of viral infections.
– common cold
– influenza
18.3 Viral Diseases
Viruses cause many infectious diseases
• There are many examples of viral infections.
– common cold
– influenza
– SARS
18.3 Viral Diseases
Viruses cause many infectious diseases
• There are many examples of viral infections.
– HIV
• The body has
natural
defenses
against viruses.
HIV-infected
white
blood cell
18.3 Viral Diseases
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A substance that
stimulates the body’s
own immune
response against
invasion by microbes.
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Measles
Mumps
Rubella
Influenza
Chicken Pox
Hepatitis
Meningitis
Polio
Small Pox (not used anymore)
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Made from a weakened
form of the virus itself.
Triggers the body’s
immune system to produce
antibodies
Memory cells “remember”
the virus so future attacks
can be prevented.
• HIV (Aids)
• Common cold
• West Nile Virus