Huffpost Science
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Kissing just got a whole lot less romantic–at least for germaphobes.
A new study shows that a single French kiss can transfer up to 80 million bacteria from one person to another.
For the study, 21 couples visiting a zoo in Amsterdam were asked to lock lips for 10 seconds. Before the kiss, one member of each couple drank a yogurt drink containing specific strains of bacteria. After the kiss, the researchers swabbed the mouth of the partner who hadn’t drunk the yogurt, and then did a bacterial count of the strains from the yogurt to arrive at the 80 million figure.
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