Vuvuzelas aren't just buzzing loud and annoying but they can spread germs too, a South African clinic has warned.The clinic urged fans to keep their lips on their own horns to avoid catching colds.
"A fan instrument such as the much-loved vuvuzela can unfortunately blow spittle and germs from infected individuals on to other people in crowded areas and may be a health risk for infectious illnesses such as flu," Netcare Travel Clinics doctor Pete Vincent said.
He also warned that sharing vuvuzelas can spread germs, while blowing too hard can damage the throat.
The warning comes after a woman in Cape Town ruptured her throat during a trumpet-blowing competition.
The din from the tuneless plastic trumpets have become the defining sound of South Africa's World Cup, leaving television networks hunting for ways to tune out the constant buzz from their broadcasts.
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