Vuvuzelas & Hearing Loss: World Cup Horns Can Cause Permanent Damage, Study Says

06/23/2010 02:37 pm ET | Updated May 25, 2011

The South African researchers found the noise in the stadium "reached dangerously high levels," averaging 131 decibels but up to 144 decibels. At these levels, permanent damage can be done in as little as 15 minutes. The average soccer match runs an hour-and-a-half, they reported.

The danger is magnified because thousands of vuvuzelas are being blown at the same time during a match.

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