Nasal vaccines may be the next generation of protection against COVID – USA TODAY

Researchers hope a nasal delivery system will make for a COVID vaccine better at preventing transmission and mild infections.
NEW YORK CITY — Peter Palese pulls open the door of a 16th floor lab room at Mount Sinai’s upper east side hospital.
Inside the unusually warm room, lie stacked sheets of chicken eggs, delivered fresh every Tuesday.
Palese holds a flashlight against one to show how these eggs differ from those typically eaten for breakfast. Red veins appear.