Nasal spray vaccines may be coming, and could be better than shot

Vaccines delivered through a spray into the nose could offer better protection and fewer side effects than traditional vaccine shots in the arm. There's a lot of research and testing of these kinds of vaccines for COVID and the flu, and the Food and Drug Administration recently approved one, called FluMist.

Here & Now's Deepa Fernandes speaks with Fiona Smaill, professor of pathology and molecular medicine at McMaster University, about how these vaccines work.