What is a nasal spray vaccine? Thanks for asking!

We’re all familiar with how traditional vaccines work. We get injected with a virus, or a weakened version, so that our immune system learns how to fight against it. This is most often done with a little jab in the arm. But scientists have actually been working on other injection methods for years.

Spray vaccines, or mucosal vaccines, are more effective than traditional vaccines for some illnesses. Such vaccines already exist for cholera or rotavirus, and research is ongoing to find one for whooping cough or HIV. This method is comparable to the oral vaccine, thanks to which we were able to eradicate polio throughout the world. A number of pharmaceutical companies in the US, France, Germany and China are trying to find a Covid-19 spray vaccine.

Are they doing that for people like me who hate needles? How does this all relate to the vaccine? How do nasal sprays compare to Covid-19 vaccine injections? In under 3 minutes, we answer your questions!

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