Vaccine patch may replace needles

"A vaccine patch could cut out the need for painful needles and boost the effectiveness of immunisation against diseases like flu, say US researchers. The patch has hundreds of microscopic needles which dissolve into the skin. Tests in mice show the technology may even produce a better immune response than a conventional jab. Writing in Nature Medicine, the team of researchers said the patch could one day enable people to vaccinate themselves.

Each patch, developed by researchers at Emory...