Bacteria: The Good, the Bad, and the Ugly

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streptococcus bacteria beauty photo
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With so many products -- from hand soap to dish detergent -- boasting about their antibacterial properties, it's easy to think that all bacteria are bad for you.

But the world of bacteria isn't so black and white: some bacteria help, some hurt, and some make vinegar. The 10 bacteria here are a few of the most famous -- in bright, bold color.


The streptococcus group comprises many different bacteria with a host of effects -- members of this group are responsible for diseases including strep throat, meningitis, scarlet fever, rheumatic fever, and impetigo, but are also key to the holey production of Swiss cheese.

Read More: 12 Ways Bacteria Improves Our Lives, From Hard Drives to Highrises

Photo: Ingram Publishing/Getty Images