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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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The horizontal fraction bar was introduced by the Arabs.

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