A brand new species of bacteria has been found by scientists among the hundreds which thrive in our mouths. The bug, named "Prevotella histicola" by its discoverers at King's College London, is thought to contribute to gum disease and tooth decay. Every millilitre of saliva is a cocktail of millions of bacteria, half of them unknown. The finding may help scientists understand the changes in bacterial activity that lead to mouth problems.
Professor William Wade, from the Dental Institute at King's College London, found three strains of the new organism lurking within the flesh lining the mouth, and the name "histicola" reflects this, meaning "inhabitant of tissues" in Latin.
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