Bacteria and viruses become trapped in your middle ear and cause an infection. Fluid and pressure build up, making your ear hurt. Ear infections are very common. They affect about 3 out of every 100 people. Anyone can get an ear infection .
Children are more likely to have an ear infection than adults, though.
Bacteria and viruses can travel up into a child's ear easier. That is because a child's Eustachian tube is shorter than an adult's. Some people seem to be more likely than others to get ear infections. Eskimos, American Indians, and South Pacific Islanders seem to have more ear infections. If you live in a high altitude or a cold climate you are more likely to get ear infections.