Nose Spray Vaccines Could Quash COVID Virus Variants

Photo credit: Dzmitry Kliapitski / Alamy Stock Photo. Article by Marla Broadfoot. Scientific American – May 3, 2022.

The relentless evolution of the COVID-causing coronavirus has taken a bit of the shine off the vaccines developed during the first year of the pandemic. Versions of the virus that now dominate circulation — Omicron and its subvariants — are more transmissible and adept at evading the body’s immune defenses than its original form. […]

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