The condition can be fatal if left untreated, but the tetanus vaccine and improvements in treatment mean deaths from tetanus are now very rare in the UK. In 2013, there were only seven recorded cases of tetanus in England and Wales, and no deaths.
Sound pressure is measured in decibels (dB). Like a temperature scale, the decibel scale goes below zero. The average person can hear sounds down to about 0 dB, the level of rustling leaves. Some people with very good hearing can hear sounds down to -15 dB. If a sound reaches 85 dB or stronger, it can cause permanent damage to your hearing. The amount of time you listen to a sound affects how much damage it will cause.
Age and general fitness are no protection from hearing loss-young people can be damaged as easily as the old. Someone in their mid-twenties can have the hearing that would be expected in a 65 year old. Once ears have been damaged by noise there is no cure. Hearing loss is not the only problem. Tinnitus or ringing in the ears may be caused as well. Most people suffer temporary tinnitus from time to time, often after a spell in a noisy place, but with noise-damaged ears it can become permanent.