With a sniff or a swallow, new vaccines aim to put the brakes on Covid-19 spread - WiscNews

Some scientists are taking a new approach to vaccination, making vaccines delivered via nasal sprays or tablets that would deploy more immune defenders to the body's front lines: the lining

Injected vaccines against the coronavirus that causes Covid-19 have been hugely successful, saving nearly 20 million lives globally in their first year of use and slashing the pandemic's death toll b… [+9304 chars]

full article...