Skin patch coated in covid-19 vaccine may work better than injections

Covid-19 vaccines in use today have to be stored at cold temperatures, but a patch covered in tiny plastic spikes coated in a vaccine could provide an alternative.
Read more: https://www.newscientist.com/article/2294967-skin-patch-coated-in-covid-19-vaccine-may-work-better-than-injections/?source=Snapzu