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In page Chemoprophylaxis:

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Using chemoprophylaxis as a treatment against early signs of tuberculosis has proven to be effective.[citation needed] In familial adenomatous polyposis physicians observed polyps regression with NSAIDs for anti-inflammatory therapy.[citation needed] Chemoprophylaxis is also used to treat several different varieties of meningococcal infections for close contact exposure to Neisseria meningitidis.[citation needed]