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Published byDwayne Mills Modified over 9 years ago
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KEY CONCEPT Some viral diseases can be prevented with vaccines.
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Viruses cause many infectious diseases
There are many examples of viral infections. common cold
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Viruses cause many infectious diseases
There are many examples of viral infections. common cold influenza
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Viruses cause many infectious diseases
There are many examples of viral infections. common cold influenza SARS
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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.
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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.
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