Verne Strickland Blogmaster May 25, 2011
Vuvuzela etiquette (Say what?)
"Just as with coughs or sneezes, action should be taken to prevent disease transmission, and people with infections must be advised against blowing their vuvuzelas close to other people," she said.
Her team investigated the vuvuzela hazard using a laser device to measure how many droplets were produced by eight volunteers using the horns.
On average, 658,000 lung particles, or aerosols, per litre of air were expelled from the instruments.The droplets shot into the air at the rate of four million per second.
In comparison, when the volunteers were asked to shout, they produced only 3,700 particles per litre at a rate of 7,000 per second.
"When attending a sporting event and surrounded by vuvuzela players, a spectator could expect to inhale large numbers of respiratory aerosols over the course of the event," Dr McNerney warned. "People with infections must be advised against blowing their vuvuzelas close to other people.”
Critics say they are anti-social and unsafe because of their potential to generate a din louder than a plane taking off. It is not certain that the vuvuzela will be allowed at the 2012 Olympics in London.