AdvertisementWhat A Nasal Spray Vaccine Against COVID-19 Might Do Even Better Than A ShotPlay02:58Download AudioAugust 28, 2020Joe PalcafacebookEmailSeveral 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. (AFP via Getty Images)
