KEY CONCEPT Some viral diseases can be prevented with vaccines.

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KEY CONCEPT Some viral diseases can be prevented with vaccines.

KEY CONCEPT Some viral diseases can be prevented with vaccines.

Presentation transcript:

KEY CONCEPT Some viral diseases can be prevented with vaccines.

Viruses cause many infectious diseases There are many examples of viral infections. common cold

Viruses cause many infectious diseases There are many examples of viral infections. common cold influenza

Viruses cause many infectious diseases There are many examples of viral infections. common cold influenza SARS

Viruses cause many infectious diseases There are many examples of viral infections. HIV HIV-infected white blood cell The body has natural defenses against viruses.

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.