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Download 18.3 Viral Diseases KEY CONCEPT
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Transcript
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 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 Vaccines are made from weakened pathogens. • A vaccine stimulates the body’s own immune response. • Vaccines prepare the immune system for a future attack. • Vaccines are the only way to control the spread of viral disease.
