Source: China – South China Morning PostEvery Covid-19 vaccine that has been cleared for use so far is meant to be injected into the upper arm, but scientists are exploring a different method of delivery – through the nose and mouth.Of the more than 100 Covid-19 vaccines undergoing clinical studies recognised by the World Health Organization, eight are intranasal vaccines.These are designed to target the mucosa of the nose and throat area where the coronavirus first enters the body, and offer a different immune response.Last week,…Read More