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  • Bacterial vaginosis

    Read about bacterial vaginosis (BV), a common cause of unusual vaginal discharge. BV is not a sexually transmitted infection (STI).

  • Tonsillitis

    Find out about tonsillitis, which is when the tonsils at the sides of your throat become swollen due to a viral or bacterial infection. Find out about causes and treatments.

  • Q fever

    Find out about Q fever, a bacterial infection that can be spread to humans by infected farm animals, its symptoms and what to do if you have it.

  • Probiotics

    Probiotics are thought to help restore the natural balance of bacteria in your gut when it's been disrupted by an illness or treatment. There's some evidence that probiotics may be helpful in some cases, but there's little evidence to support many health claims made about them.

  • MRSA

    Find out about MRSA, which is a bacteria that usually lives harmlessly on the skin but can cause a serious infection if it gets inside the body.

  • Mastoiditis

    Find out about mastoiditis, a serious bacterial infection that affects the mastoid bone behind the ear.

  • Lyme disease

    Read NHS information on Lyme disease, which is a bacterial infection spread to humans by infected ticks.

  • Legionnaires' disease

    Find out more about Legionnaires' disease, an uncommon but serious lung infection you can get from inhaling droplets of water containing bacteria that cause the infection.

  • Kidney infection

    A kidney infection (pyelonephritis) is a painful and unpleasant illness caused by bacteria travelling from your bladder into one or both of your kidneys.

  • Group B strep

    Find out about group B strep, a type of bacteria called streptococcal bacteria.