Malaria

Malaria: Overview

Malaria is a serious and sometimes fatal disease caused by a parasite.  It is the world's number one parasitic killer affecting some 2 million people every year and in areas of rural Africa, one in twenty children under the age of five are killed by this parasitic infection.

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There are four kinds of malaria that can infect humans: Plasmodium falciparum, P.  vivax, P.  ovale, and P.  malariae.

Incidence; Causes and Development

Malaria occurs in over 100 countries and territories, and more than 40% of the people in the world are at risk.  Large areas of Central and South America, Hispaniola (Haiti and the Dominican Republic), Africa, the Indian subcontinent, Southeast Asia, the Middle East, and Oceania are considered malaria-risk areas.

The World Health Organization estimates that yearly some 300-500 million cases of malaria occur and more than 1 million of those affected die.  About 1,200 cases of malaria are diagnosed in the United States each year.  Most cases in the United States occur amongst immigrants and travelers returning from malaria-risk areas, mostly from sub-Saharan Africa and the Indian subcontinent.

Humans get malaria from the bite of a malaria-infected mosquito.  When a mosquito bites an infected person, it ingests microscopic malaria parasites found in the person's blood.  The malaria parasite must grow in the mosquito for a week or more before infection can be passed to another person.  If, after a week, the mosquito then bites another person, the parasites go from the mosquito's mouth into the person's blood.  The parasites then travel to the person's liver, enter the liver's cells, grow and multiply.  During this time when the parasites are in the liver, the person has not yet felt sick.

The parasites leave the liver and enter red blood cells; this may take as little as 8 days or as many as several months.  Once inside the red blood cells, the parasites grow and multiply.  The red blood cells burst, freeing the parasites to attack other red blood cells.  Toxins from the parasite are also released into the blood, making the person feel sick.  If a mosquito bites this person while the parasites are in his or her blood, it will ingest the tiny parasites.  After a week or more, the mosquito can infect another person.

Incubation Period
For most people, symptoms begin 10 days to 4 weeks after infection, although a person may feel ill as early as 8 days or up to 1 year later.  Two kinds of malaria, P.  vivax and P.  ovale, can relapse; some parasites can rest in the liver for several months up to 4 years after a person is bitten by an infected mosquito .  When these parasites come out of hibernation and begin invading red blood cells, the person will become sick.

Diagnosis and Tests

Malaria is diagnosed by looking for the parasites in a drop of blood.  Blood will be put onto a microscope slide and stained so that the parasites will be visible under a microscope.

Treatment and Prevention

Infection with one type of malaria, Plasmodium falciparum, if not promptly treated, may cause kidney failure, seizures, mental confusion, coma, and death.

How can malaria be prevented?

  • Visit your health care provider 4-6 weeks before foreign travel for any necessary vaccinations and a prescription for an antimalarial drug.
  • Take your antimalarial drug exactly on schedule without missing doses.
  • Prevent mosquito and other insect bites.  Use DEET insect repellent on exposed skin and flying insect spray in the room where you sleep.
  • Wear long pants and long-sleeved shirts, especially from dusk to dawn.  This is the time when mosquitoes that spread malaria bite.
  • Sleep under a mosquito bednet that has been dipped in permethrin insecticide if you are not living in screened or air-conditioned housing.

Signs, symptoms & indicators of Malaria:

Symptoms - Bowel Movements

Symptoms - Gas-Int - General

Occasional/regular/frequent unexplained nausea

Nausea, vomiting, and diarrhea may occur.

Symptoms - Metabolic

Occasional unexplained fevers

Symptoms of malaria include fever and flu-like illness, including shaking chills, headache, muscle aches, and tiredness.

Conditions that suggest Malaria:

Circulation

Hemolytic Anemia

Malaria may cause anemia because of the loss of red blood cells.

General

Metabolic

Jaundice

Malaria can cause jaundice through the loss of red blood cells.

Musculo-Skeletal

Muscle Pains (Myalgia)

Flu-like illness and muscle aches are generally present in cases of malaria.

Organ Health

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Risk factors for Malaria:

Medical Procedures

Blood transfusions

Each year in the United States, a few cases of malaria result from blood transfusions, are passed from mother to fetus during pregnancy, or are transmitted by locally infected mosquitoes.

Personal Background

Living in the tropics

Malaria once extended widely throughout the old world, reaching as far north as 64°N latitude and as far south as 32°S latitude.  Today, however, malaria is almost exclusively a problem of the geographical tropics.

(Very) recent visit(s) to the tropics

Any traveler who becomes ill with a fever or flu-like illness while traveling and up to 1 year after returning home should immediately seek professional medical care.  They should tell their health care provider that they have been traveling in a malaria-risk area.

Malaria can lead to:

General

Metabolic

Musculo-Skeletal

Muscle Pains (Myalgia)

Flu-like illness and muscle aches are generally present in cases of malaria.

Recommendations for Malaria:

Botanical

Qinghaosu

Qinghaosu, or artemisinin – also known as sweet wormwood – provides a possible solution to the ever growing problem of Plasmodium falciparum – drug resistant malaria.  Widely used in China, it is fast and efficient when used to treat people who already have malaria, with no side-effects.

Drug

Conventional Drug Use

Although resistance is increasing, most types of malaria can still be cured with prescription drugs.  The type of drugs and length of treatment depend on which kind of malaria is diagnosed, where the patient was infected, the age of the patient, and how severely ill the patient was at start of treatment.

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