I'm following the studies around nasal covid vaccines. https://www.voanews.com/east-asia-pacific/researchers-begin-trials-covid-19-nasal-spray-vaccine https://w

I'm following the studies around nasal covid vaccines. https://www.voanews.com/east-asia-pacific/researchers-begin-trials-covid-19-nasal-spray-vaccine https://www.voanews.com/east-asia-pacific/researchers-begin-... The theory is that they will create a better early response in the cells where the virus makes first contact making it more likely to stop replication early. If it works it would seem this could be a more effective way to vaccine for respiratory viruses.