What A Nasal Spray Vaccine Against COVID-19 Might Do Even Better Than A Shot

Several influenza vaccines have been made in the form of a nasal spray, instead of an injection. The sprays confer two kinds of immunity to the recipient, but can be difficult technologically to make.

A vaccine against the coronavirus needs to keep people from getting very sick and dying. But preventing the spread of the disease is also important, and vaccines delivered by nasal spray may do that.

(Image credit: TIM SLOAN/AFP via Getty Images)

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