MashupMDNose Spray Vaccines Could Quash COVID Virus Variants

Although vaccinations to the arm can still prevent serious illness, their ability to ward off infection completely has been diminished. And part of the reason may be the location of the vaccines, which some scientists now want to change by delivering inoculations to the site where the virus first makes contact: the nose. Three separate nasal sprays, now in advanced trials, could trigger stronger immune responses in people who have COVID-19.