Chemoprophylaxis

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Chemoprevention or chemoprophylaxis refers to the administration of a medication for the purpose of preventing disease or infection. [1] Antibiotics, for example, may be administered to patients with disorders of immune system function to prevent bacterial infections (particularly opportunistic infection). [2] Antibiotics may also be administered to healthy individuals to limit the spread of an epidemic, or to patients who have repeated infections (such as urinary tract infections) to prevent recurrence. It may also refer to the administration of heparin to prevent deep venous thrombosis in hospitalized patients.

Contents

In some cases, chemoprophylaxis is initiated to prevent the spread of an existing infection in an individual to a new organ system, as when intrathecal chemotherapy is administered in patients with malignancy to prevent further infection.

The use of chemoprophylaxis is limited primarily by two factors: risk and financial costs.

Specific diseases

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 ]

The World Health Organization recommends chemoprevention to prevent Malaria in the Sahel region of Sub-Saharan Africa through the use of the drugs sulfadoxine/pyrimethamine and amodiaquine. [3] This technique is called Seasonal Malaria Chemoprevention (SMC). The charity evaluator GiveWell lists the Malaria Consortium's SMC program as one of its priority programs due to its high level of cost-effectiveness and ability to absorbe additional funding. [4]

See also

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Sulfadoxine/pyrimethamine, sold under the brand name Fansidar, is a combination medication used to treat malaria. It contains sulfadoxine and pyrimethamine. For the treatment of malaria it is typically used along with other antimalarial medication such as artesunate. In areas of Africa with moderate to high rates of malaria, three doses are recommended during the second and third trimester of pregnancy.

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<span class="mw-page-title-main">Intravitreal injection</span> Method of administration of drugs into the eye by injection with a fine needle

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Pre-exposure prophylaxis (PrEP), is the use of medications to prevent the spread of disease in people who have not yet been exposed to a disease-causing agent. Vaccination is the most commonly used form of pre-exposure prophylaxis; other forms of pre-exposure prophylaxis generally involve drug treatment, known as chemoprophylaxis. Examples include taking medication to prevent infection by malaria or HIV. In particular, the term PrEP is now synonymous in popular usage with the use of pre-exposure prophylaxis for HIV prevention.

References

  1. Woolf, Steven H.; Jonas, Steven; Kaplan-Liss, Evonne (2008), Health Promotion and Disease Prevention in Clinical Practice, Lippincott Williams & Wilkins, pp. 346–358, ISBN   978-0781775991.
  2. Golan, David E. (2008), Principles of Pharmacology: The Pathophysiologic Basis of Drug Therapy, Lippincott Williams & Wilkins, p. 578, ISBN   978-0781783552.
  3. "WHO | Seasonal malaria chemoprevention (SMC)". Archived from the original on May 3, 2014.
  4. "Malaria Consortium – Seasonal Malaria Chemoprevention".