Multiple time-delayed drugs could be given in single injection, say scientists

The new approach could allow multiple vaccines in one injection, but may also be useful in treatments for allergies, diabetes and even cancer where multiple injections are needed.Multiple injections for vaccinations could become a thing of the past, according to scientists who have developed an approach for delivering many doses of different substances in just one jab.The technology involves encapsulating drugs or vaccines within tiny particles made of biodegradable polymers.