A COVID vaccine patch that delivers the virus’ spike protein into the skin may lead to a stronger, faster immune response than vaccines injected into the muscle.
A new study in mice finds that a patch-delivered vaccine protected the animals from illness and death after just one dose. The vaccine patch is stable for a month at room temperature and for a week at 40°C (104°F), making it a promising option for regions where refrigeration is rare or unreliable.
“It’s that last mile where a lot of breakdown can occur due to degradation of the cold chain,” says study author David Muller, a senior research fellow in chemistry and molecular biosciences at the Univ. of Queensland in Australia...
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