[actuallyalys]

Part of the issue with fast-acting viral respiratory diseases seems to be that vaccines don't induce mucosal immunity: "Currently approved SARS-CoV-2 vaccines induce robust systemic immunity but poor immunity at the respiratory mucosa, meaning that they are highly effective against symptomatic disease but do not prevent viral transmission."

https://www.nature.com/articles/s41590-022-01405-w

[grey413]

That's very interesting. Just goes to show that there's plenty to be learned. Thanks for sharing.