There is promising news for every parent who has had to watch their child suffer through ear infections.
Scientists are working on a new nasal spray to help prevent ear infections.
It has not been tested on humans yet, but studies in mice show the spray to be 100% effective.
Researchers exposed the mice to a bacteria, then gave half the spray.
None of the animals in the sprayed group got ear infections, while 80% of the other mice did.