Covid-19 vaccines have quickly altered our relationship with SARS-CoV-2, turning a harmful an infection into one thing akin to the widespread chilly for a lot of vaccinated individuals who contract it. However whereas these vaccines are nice at defending towards extreme sickness and dying, they can not cease vaccinated folks from contracting the virus and experiencing gentle signs.
If we need to stop gentle Covid infections, we’re going to want vaccines that defend us the place infections begin: within the mucus membranes of the nostril, mouth, and throat. And for that, we’re seemingly going to want intranasal vaccines.
Quite a few analysis teams and firms are engaged on Covid-19 vaccines that might be delivered intranasally, however the improvement course of is hard. Watch the explainer above to study extra.