A live attenuated vaccine uses a weakened form of the virus, which can still replicate but does not cause disease. It stimulates a strong immune response by mimicking a natural infection.
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Live attenuated vaccines are often used against viral infections like measles, mumps, and rubella.
They generally provide long-lasting immunity with fewer doses compared to inactivated vaccines.
These vaccines require careful storage at low temperatures to maintain their efficacy.
Individuals with compromised immune systems should avoid live attenuated vaccines due to the risk of disease.
Common examples include the MMR (measles, mumps, rubella) vaccine and the intranasal influenza vaccine.