ilovewings
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Intranasal COVID-19 vaccines: From bench to bed
Currently licensed COVID-19 vaccines are all designed for intramuscular (IM) immunization. However, vaccination today failed to prevent the virus infection through the upper respiratory tract, which is partially due to the absence of mucosal immunity activation. Despite the emerging severe acute...
www.thelancet.com
A really comprehensive article about Intranasal vaccines. I can see why there are concerns. When I think of an intranasal vaccine, I think, oh that sounds great- and it does, but there are lots of potential issues involving safety concerns, that I would not expect this type of vaccine to roll out any time soon.