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Tonsillitis - Cause

Tonsillitis is usually caused by a virus. Bacteria can also cause tonsillitis. The most common bacterial cause of tonsillitis is group A beta-hemolytic streptococcus (GABHS), which also causes strep throat.

Tonsillitis can also be caused by fungi or parasites. But these causes are rare in people who have healthy immune systems.

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How tonsillitis is spread

Tonsillitis is spread by close contact with an infected person. Droplets of disease-causing agents (pathogens) pass through the air when an infected person breathes, coughs, or sneezes. You may then become infected after you breathe in these droplets. Infection can also occur if pathogens get on your skin or on objects that come in contact with your mouth, nose, eyes, or other mucous membranes. Symptoms usually appear about 2 to 5 days after exposure.

A person with tonsillitis caused by strep bacteria is contagious early on and, without treatment, can remain so for up to 2 weeks. Antibiotics shorten the contagious period, and an infected person is no longer contagious about 24 to 48 hours after beginning antibiotic therapy.

    This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http:// cancer .gov or call 1-800-4-CANCER.

    WebMD Medical Reference from Healthwise

    Last Updated: October 30, 2013
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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    How Do I Measure Up? Get the Facts Fast!

    Number of Days Per Week I Floss

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    Only 18.5% of Americans never floss. You are missing out on a simple way to make a big difference in the health of your mouth. Regardless of how well you brush, plaque still forms between your teeth and along your gums. Floss removes food trapped between the teeth and removes the film of bacteria that forms there before it turns to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Try flossing just one tooth to get started.

    You are one of 31% of Americans who don't floss daily. You are missing out on a simple way to make a big difference in the health of your mouth. Regardless of how well you brush, plaque still forms between your teeth and along your gums. Toothbrush bristles alone cannot clean effectively between these tight spaces. Flossing removes up to 80% of the film that hardens to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Aim for 3 more days!

    You are one of 31% of Americans who don't floss daily, but you're well on your way to making a positive impact on your teeth and gums. Regardless of how well you brush, plaque still forms between your teeth and along your gums. Toothbrush bristles alone cannot clean effectively between these tight spaces. Flossing removes up to 80% of the film that hardens to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Aim for all 7 days!

    Only 50.5% of Americans floss daily, and good for you that you are one of them! Regardless of how well you brush, plaque still forms between your teeth and along your gums. Toothbrush bristles alone cannot clean effectively between these tight spaces. Flossing removes up to 80% of the film that hardens to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Congratulations on your good oral health habit!

    SOURCES:

    American Dental Association, Healthy People 2010

    This tool is intended only for adults 18 and older.

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