Researchers at Nationwide Children's Hospital are developing a vaccine for ear infections that can be delivered not with a needle but a dime-sized patch placed behind the ear. The vaccine is designed to attack infection-causing bacteria in the ear, allowing the body's immune system to then take up the fight. Young children--who are most commonly prone to ear infections--would benefit from the dermal application as opposed to a needle jab for obvious reasons, the researchers say, but the patch also set off immune responses not seen with other approaches. More