Which delivery method is used for the live attenuated influenza vaccine?

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Multiple Choice

Which delivery method is used for the live attenuated influenza vaccine?

Explanation:
Live attenuated influenza vaccine is delivered intranasally as a nasal spray. The weakened virus is designed to replicate only in the cooler environment of the upper respiratory tract, which helps stimulate mucosal immunity (like secretory IgA) along with systemic immunity without causing disease in healthy individuals. Inactivated vaccines, by contrast, are given by injection because they do not replicate. So the nasal spray route is the key delivering method for the live attenuated form.

Live attenuated influenza vaccine is delivered intranasally as a nasal spray. The weakened virus is designed to replicate only in the cooler environment of the upper respiratory tract, which helps stimulate mucosal immunity (like secretory IgA) along with systemic immunity without causing disease in healthy individuals. Inactivated vaccines, by contrast, are given by injection because they do not replicate. So the nasal spray route is the key delivering method for the live attenuated form.

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