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==[[Malaria epidemiology and demographics|Epidemiology & Demographics]]== | ==[[Malaria epidemiology and demographics|Epidemiology & Demographics]]== | ||
Revision as of 14:20, 12 June 2012
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [3] For patient information click here
{{#meta: itemprop="medicalWebPageAudiences" content="patient"}}{{#meta: itemprop="medicalWebPageSpecialities" content="cardiology"}}{{#meta: itemprop="medicalWebPageInfoTypes" content="symptoms,diagnosis,treatment,causes,prognosis,complications"}} [[Natural Progression::{{{naturalProgression}}}| ]] Classification Classic::Classification Atypical::
Overview
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Malaria Microchapters |
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Diagnosis |
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Treatment |
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Case studies |
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Malaria On the Web |
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American Roentgen Ray Society Images of Malaria |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [4]; Associate Editor(s)-in-Chief: Usama Talib, BSc, MD [5]
Overview
Malaria is a vector-borne infectious disease caused by protozoan parasites. Malaria is one of the most common infectious diseases and an enormous public-health problem. The disease is caused by protozoan parasites of the genus Plasmodium. The most serious forms of the disease are caused by Plasmodium falciparum and Plasmodium vivax, but other related species (Plasmodium ovale, Plasmodium malariae, and sometimes Plasmodium knowlesi) can also infect humans. This group of human-pathogenic Plasmodium species is usually referred to as malaria parasites.
Historical Perspective
Malaria is considered one of the oldest infections known to mankind. The symptoms of malaria were first believed to be caused by noxious elements.[1] It was not until 1880 when Charles Louis Alphone Laveran discovered the Plasmodium parasite in blood smears of patients with malaria.[2] The role of mosquitos in the transmission of malaria to humans was discovered a few years later. Consequently, the entire life cycle of the Plasmodium parasite remained enigmatic until 1982.[3] Although malaria has always been treated using quinine, an alkaloid derived from barks of cinchona, the first synthetic quinine was produced in 1948.[4][5] In 2014, the first candidate for anti-malarial vaccine was developed.
Pathophysiology
Malaria in humans develops via two phases: an exoerythrocytic (hepatic) and an erythrocytic phase. When an infected mosquito pierces a person's skin to take a blood meal, sporozoites in the mosquito's saliva enter the bloodstream and migrate to the liver.[6]
Classification
The classification of malaria can be made according to the strains of Plasmodium species. There are 5 common Plasmodium species that infect humans: P. falciparum, P. ovale, P. vivax, P. malariae, and P. knowlesi. Malaria can also be classified according to severity of infection: uncomplicated vs. severe.[6]
Causes
Malaria is a vector-borne infectious disease caused by protozoan parasites. P. vivax is the most common cause of infection, responsible for about 80 % of all malaria cases. However, P. falciparum is the most important cause of disease, and responsible for about 15% of infections and 90% of deaths.[7]
Epidemiology and Demographics
Worldwide, 3.4 billion people live in areas at risk of malaria transmission in 106 countries and territories. The World Health Organization estimates that in 2012 malaria caused 207 million clinical episodes, and 627,000 deaths. An estimated 91% of deaths in 2010 were in the African Region.[8] The vast majority of cases of malaria occur in children under the age of 5 years.[9] Malaria is presently endemic in a broad band around the equator, in areas of the Americas, many parts of Asia, and much of Africa; however, it is in sub-Saharan Africa where 85– 90% of malaria fatalities occur.[10] Where malaria is found depends mainly on climatic factors such as temperature, humidity, and rainfall.
Risk Factors
Travel to endemic areas is a risk factor for malaria. For travelers, regions associated with the highest estimated relative risk of infection are West Africa and Oceania. Human behavior, often dictated by socioeconomic situations, can influence the risk of malaria for individuals and communities. In addition, children and pregnant women are at a higher risk of contracting malaria. Certain biologic characteristics can protect against particular types of malaria. Two genetic factors, the sickle cell trait and absence of Duffy blood group, have been shown to be epidemiologically significant.[11]
Screening
Screening of malaria is important in Sub-Saharan refugees and blood donors.[12]
Natural History, Complications ad Prognosis
Following the infective bite of the Anopheles mosquito, a period of time goes by before the first symptoms appear, with the incubation period varying between 7 to 30 days depending on the immune status of the patient, type and strain of the plasmodium, the dose of sporozoites injected on the bite, and the presence of prophylactic drugs. The classical but rarely observed malaria attack lasts 6-10 hours, and it consists of a cold stage, hot stage, and sweating stage. Severe malaria is almost exclusively caused by P. falciparum infections and usually arises 6-14 days following infection.[13] Complications of severe malaria include splenomegaly, severe headache, cerebral ischemia, hepatomegaly, hypotension, ARDS, and hemoglobinuria with renal failure. Severe malaria can progress extremely rapidly and cause death within hours or days. In the most severe cases, fatality rates can exceed 20%, even with intensive care and treatment.[14][15]
Diagnosis
Symptoms
The hallmark symptom of malaria is fever, which commonly occurs in paroxysms, separated by fever-free time intervals. The classical but rarely observed malaria attack lasts 6-10 hours, and it consists of a cold stage, hot stage, and sweating stage. Other common symptoms of malaria include chills, headache, nausea, vomiting, weakness, night sweats, flu-like symptoms, and myalgia. In the presence of a paroxysmal fever, travel history to a country where malaria is endemic is an important alert for the diagnosis.[16] Most importantly, malaria symptoms must be distinguished as to whether they reflect an uncomplicated or a severe course of infection. While uncomplicated infection is a benign process, severe malaria causes organ damage and is considered a medical emergency.
Physical Examination
Physical findings in malaria may include fever, weakness, pallor, jaundice, and perspiration. Other findings on physical exam are tachycardia, tachypnea, splenomegaly, and hepatomegaly.
Laboratory Findings
The diagnosis of malaria is confirmed by the identification of the malaria parasite in the patient's blood under microscopy. Laboratory tests may also reveal anemia with decreased hemoglobin, hematocrit, and haptoglobin in addition to either a decreased or increased leukocyte count. Biochemistry may reveal hypoglycemia, elevated LDH, acidosis, and mild hyponatremia due to vomiting and diarrhea. In severe disease, elevated creatinine, proteinuria, and hemoglobinuria may be present secondary to renal failure.[12][17] Other malaria-specific tests include: the antigen detection test, PCR, and serology test for the presence of antibodies against the plasmodium. Drug resistance tests should also be performed to assess the susceptibility of the microorganism to the antimalarial drugs.
X ray
X rays are not required for the diagnosis of malaria.
Ultrasound
Ultrasound is not required for the diagnosis of malaria. It can be used to assess splenomegaly or complications of malaria.[15]
CT scan
CT scan is not required for the diagnosis of malaria.
MRI
MRI is not required for the diagnosis of malaria.
Other diagnostic studies
Malaria is diagnosed by complementing the clinical findings of the patient with malaria-specific diagnostic studies. Other diagnostic studies like PCR are being used to help with malaria elimination.[18]
Treatment
Medical Therapy
Active malaria infection with P. falciparum is a medical emergency requiring hospitalization. Infection with P. vivax, P. ovale or P. malariae can often be treated on an outpatient basis. Treatment of malaria involves supportive measures as well as specific antimalarial drugs. When properly treated, someone with malaria can expect a complete cure.[19]
Primary Prevention
Although some are under development, no vaccine is currently available for malaria. RTS,S malaria vaccine has been proposed in July 2014 and is pending approval by the European Medicines Agency (EMA). Other more recent vaccine, such as PfSPZ malaria vaccine is currently being studied for clinical efficacy.
Preventative drugs must be taken continuously to reduce the risk of infection. Most adults from endemic areas have a degree of long-term recurrent infection and also of partial resistance; the resistance reduces with time and adults may become susceptible to severe malaria if they have spent a significant amount of time in non-endemic areas. Individuals are strongly recommended to take full precautions if they return to an endemic region.
Secondary Prevention
Malaria transmission can be reduced by preventing mosquito bites with mosquito nets and insect repellents, or by mosquito control measures such as spraying insecticides inside houses and draining standing water where mosquitoes lay their eggs.
Cost-Effectiveness of Therapy
Although effective anti-malarial drugs are on the market, the disease remains a threat to people living in endemic areas who have no proper and prompt access to effective drugs. Access to pharmacies and health facilities, as well as drug costs, are major obstacles. Médecins Sans Frontières estimates that the cost of treating a malaria-infected person in an endemic country was between US $0.25 and $2.40 per dose in 2002.[20]
Future or Investigational Therapies
RTS,S is considered the first anti-malaria vaccine candidate. The phase 3 trial for the vaccine involving young African children demonstrated significant efficacy beyond the efficacy observed by the use of conventional preventative measures, proving further benefit in preventing malaria. On July 24 2014, GSK submitted a regulatory application to the European Medicines Agency (EMA) for approval of the vaccine. If granted, the World Health Organization (WHO) intends to recommend the RTS,S malaria vaccine in 2015. Other vaccines are also in the making, but still require further validation of their clinical efficacy.
References
- ↑ Cox FE (2010). "History of the discovery of the malaria parasites and their vectors". Parasit Vectors. 3 (1): 5. doi:10.1186/1756-3305-3-5. PMC 2825508. PMID 20205846.
- ↑ Laveran CL (1982). "Classics in infectious diseases: A newly discovered parasite in the blood of patients suffering from malaria. Parasitic etiology of attacks of malaria: Charles Louis Alphonse Laveran (1845-1922)". Rev Infect Dis. 4 (4): 908–11. PMID 6750753.
- ↑ Krotoski WA, Collins WE, Bray RS, Garnham PC, Cogswell FB, Gwadz RW; et al. (1982). "Demonstration of hypnozoites in sporozoite-transmitted Plasmodium vivax infection". Am J Trop Med Hyg. 31 (6): 1291–3. PMID 6816080.
- ↑ Seeman JI (2007). "The Woodward-Doering/Rabe-Kindler total synthesis of quinine: setting the record straight". Angew Chem Int Ed Engl. 46 (9): 1378–413. doi:10.1002/anie.200601551. PMID 17294412.
- ↑ Kaufman TS, Rúveda EA (2005). "The quest for quinine: those who won the battles and those who won the war". Angew Chem Int Ed Engl. 44 (6): 854–85. doi:10.1002/anie.200400663. PMID 15669029.
- ↑ 6.0 6.1 Long CA, Zavala F (2017). "Immune Responses in Malaria". Cold Spring Harb Perspect Med. doi:10.1101/cshperspect.a025577. PMID 28389518.
- ↑ Mendis K, Sina B, Marchesini P, Carter R (2001). "The neglected burden of Plasmodium vivax malaria" (PDF). Am J Trop Med Hyg. 64 (1-2 Suppl): 97–106. PMID 11425182.
- ↑ Malaria Facts. CDC.gov accessed on 07/24/2014 [1]
- ↑ Greenwood BM, Bojang K, Whitty CJ, Targett GA (2005). "Malaria". Lancet. 365: 1487–1498. PMID 15850634.
- ↑ Layne SP. "Principles of Infectious Disease Epidemiology /" (PDF). EPI 220. UCLA Department of Epidemiology. Retrieved 2007-06-15.
- ↑ Factors. CDC.gov Accessed on 7/24/2014
- ↑ 12.0 12.1 "Immigrant and Refugee Health".
- ↑ Trampuz A, Jereb M, Muzlovic I, Prabhu R (2003). "Clinical review: Severe malaria". Crit Care. 7 (4): 315–23. PMID 12930555.
- ↑ Kain K, Harrington M, Tennyson S, Keystone J (1998). "Imported malaria: prospective analysis of problems in diagnosis and management". Clin Infect Dis. 27 (1): 142–9. PMID 9675468.
- ↑ 15.0 15.1 Unger HW, Ome-Kaius M, Karl S, Singirok D, Siba P, Walker J; et al. (2015). "Factors associated with ultrasound-aided detection of suboptimal fetal growth in a malaria-endemic area in Papua New Guinea". BMC Pregnancy Childbirth. 15: 83. doi:10.1186/s12884-015-0511-6. PMC 4404558. PMID 25881316.
- ↑ Mandell, Gerald (2010). Mandell, Douglas, and Bennett's principles and practice of infectious diseases. Philadelphia, PA: Churchill Livingstone/Elsevier. ISBN 0443068399.
- ↑ Mandell, Gerald (2010). Mandell, Douglas, and Bennett's principles and practice of infectious diseases. Philadelphia, PA: Churchill Livingstone/Elsevier. ISBN 0443068399.
- ↑ Srisutham S, Saralamba N, Malleret B, Rénia L, Dondorp AM, Imwong M (2017). "Four human Plasmodium species quantification using droplet digital PCR". PLoS One. 12 (4): e0175771. doi:10.1371/journal.pone.0175771. PMID 28423028.
- ↑ If I get malaria, will I have it for the rest of my life? CDC publication, Accessed 14 Nov 2006
- ↑ Medecins Sans Frontieres, "What is the Cost and Who Will Pay?"
Historical Perspective
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Malaria Microchapters |
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Diagnosis |
|---|
|
Treatment |
|
Case studies |
|
Malaria On the Web |
|
American Roentgen Ray Society Images of Malaria |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [6]; Associate Editor(s)-In-Chief: Yazan Daaboul, Serge Korjian, Alison Leibowitz [7], Marjan Khan M.B.B.S.[8]
Overview
The symptoms of malaria, one of the oldest known infections, were initially believed to be caused by noxious elements. In 1880 Charles Louis Alphone Laveran discovered the Plasmodium parasite in blood smears of patients with malaria. The role of mosquitos in the transmission of malaria to humans was discovered a few years later. The entire life cycle of the Plasmodium parasite remained enigmatic until 1982.Although malaria has historically been treated using quinine, an alkaloid derived from barks of cinchona, the first synthetic quinine was produced in 1948.In 2014, the first candidate for anti-malarial vaccine was developed.
Historical Perspective
Discovery
Ancient History
- Malaria is one of the earliest discovered global diseases, which continues to infect hundreds of million people worldwide. Frequently, it has been regarded as the most significant disease over the past three thousand years. Since antiquity, the malarial syndrome has been described in ancient China, India, Greece, and Egypt.[1]
- Hippocrates, Homer, and other Greek and Roman physicians often referred to malaria as the “marsh fever”, “intermittent fever”, and “ague”.[1][2]
- The name “malaria” was only coined in the mid-eighteenth century, derived from two Latin words that collectively translate to “bad air”.[3]
Discovery and Differentiation of the Malaria Parasite
- Malaria was originally believed to be an airborne noxious element or miasma from swamps. It was not until 1880, when Charles Louis Alphone Laveran, a French military physician, discovered an infectious parasite when he microscopically examined blood smears of 44 malaria patients and “noticed among the red corpuscles elements that seemed to be parasites”.[4]
- Fourteen years later in 1897, Sir Ronald Ross, an Indian-born British bacteriologist, isolated malarial oocysts in Anopheles mosquitos and was able to prove that the culcine mosquito is the malarial vector for avian malaria.[5]
- Consequently, he also won the Nobel Prize for Physiology or Medicine in 1902 for his research on malarial transmission and life cycle.[3]
- Ross’s discovery was then followed by a similar discovery one year later for Anopheles mosquito and human malaria by Italian researchers Giovanni Battista Grassi, Amico Bignami, Giuseppe Bastianelli, Angelo Celli, Camillo Golgi, and Ettore Marchiafava.[1]
Outbreaks
Malaria in the United States
- Malaria was mostly eliminated from the United States in the early 1950s.[6]
- Between 1957 and 2011, in the United States, 63 outbreaks of locally transmitted mosquito-borne malaria occurred. In such outbreaks, local mosquitoes become infected by biting individuals carrying malaria parasites (acquired in endemic areas), subsequently transmitting malaria to local residents.[6]
- Between 1963 and 2011, 97 cases of transfusion-transmitted malaria were reported in the United States. Approximately two thirds of these cases could have been prevented if the implicated donors had been deferred according to established guidelines.[6]
Landmark Events in the Development of Treatment Strategies
Synthetic Quinine
- Robert Woodward and William vonEggers Doering developed the total synthesis of quinine in 1944.
- Paul Rabe and Karl Kindler’s report on converting d-quinotoxine into quinine in 1918.[7][8]
- Originally, quinine is an alkaloid derived from barks of cinchona and Remijia tree species that were proven to be effective in the treatment of malaria.
- With Woodward and Doering’s discovery of the first artificial quinine, the first synthetic pharmacological agent to treat malaria was produced.[8]
Chloroquine
- In 1934, chloroquine (Resochin) was synthesized followed by Sontochin.[9]
- These compounds belonged to a new class of antimalarials known as four-amino quinolines.
- Following World War II, chloroquine emerged as the principal weapons in the WHO's ambitious “global eradication” malaria campaign.
- Chloroquine-resistant P. falciparum (CRPF) probably arose de novo from four independent geographic locations:
- The Thai-Cambodian border around 1957.
- Venezuela and the nearby Magdalena Valley of Colombia around 1960.
- Port Moresby, Papua New Guinea, in the mid-1970s.
- In Africa, CRPF was first found in 1978, spreading next to inland coastal areas and by 1983, to Sudan, Uganda, Zambia, and Malawi.
Sulfadoxine-Pyrimethamine
- Sulfadoxine-pyrimethamine (SP),the most widely used antifolate antimalarial combination today, was introduced in Thailand in 1967. Resistance to SP was reported in Thailand later that year.[9]
- The pyrimidine derivative, proguanil, emerged from the antimalarial pipeline during World War II. it stimulated further study for making agents that block folate synthesis in parasites and bacteria, and resulted in the development of pyrimethamine.
- It became apparent that malaria parasites could quickly alter the target enzyme of the two drugs, leading to resistance.
- sulfonamides were then combined with proguanil or pyrimethamine for increasing efficacy, and forestalling or preventing the development of resistance.
Mefloquine
- Mefloquine was a collaborative achievement of the U.S. Army Medical Research and Development Command, the World Health Organization (WHO/TDR), and Hoffman-La Roche.[9]
- Mefloquine's efficacy in preventing falciparum malaria was acknowledged in 1974.
- Mefloquine resistance began to appear in Asia around the time of the drug's availability in 1985.
Artemisinin
- Artemisinin is the antimalarial isolated by Chinese scientists in 1972 from Artemisia annua (sweet wormwood).[9]
- The earliest report of its use appears in a Chinese book found in the Mawanhgolui Han dynasty tombs dating to 168 BC.
- Artemisinin and other Artemether-group drugs are the main line of treatment against drug-resistant malaria in many areas of southeast Asia.
- The number of Artemisinin-based combination therapy treatment courses procured from manufacturers increased globally from 187 million in 2010 to 409 million in 2016.[10]
- Artemisinin partial resistance likely emerged prior to 2001.To date, it has been confirmed in 5 countries: Cambodia, the Lao People’s Democratic Republic, Myanmar, Thailand and Viet Nam.[10]
Partial Eradication of Malaria
- Upon the understanding of malaria's mode of transmission and mechanisms of disease, mosquito control and prompt diagnosis and treatment, allowed most European countries to eliminate malaria before the Second World War.[11]
- In 1955, the Global Malaria Eradication Program was established in an effort to control and eliminate malaria, as well as to reduce the malarial burden in regions of moderate prevalence outside tropical Africa.
- The financial coverage and expertise to fight malaria further expanded to include global efforts, such as "Global Fund to Fight HIV, TB, and Malaria", "U.S. President's Malaria Initiative", and "World Bank's Booster Program".[11]
- In 2008, the World Health Organization (WHO) announced a multibillion-dollar initiative to eradicate malaria, partially funded by international donors.[12]
- In 2005, with a grant funding from the Bill and Melinda Gates Foundation, PATH Malaria Vaccine Initiative (MVI), a non-profit organization, collaborated with Glaxosmithkline, to develop an anti-malarial vaccine. The vaccine has been administered, alongside other infant vaccines, through the Expanded Program on Immunization (EPI).
- In 2011, the first co-primary end point from the phase 3 trial of RTS, S/AS01 malaria vaccine was published, followed by a second co-primary end point in 2012.[13]
- The vaccine was used to protect against uncomplicated and severe malaria in infants. In July 2014, Glaxosmithkline applied for approval to be the world's first anti-malarial vaccine. Other malarial vaccines are currently being developed, but still require further validation of their clinical efficacy.
References
- ↑ 1.0 1.1 1.2 1.3 Cox FE (2010). "History of the discovery of the malaria parasites and their vectors". Parasit Vectors. 3 (1): 5. doi:10.1186/1756-3305-3-5. PMC 2825508. PMID 20205846.
- ↑ Bruce-Chwatt LJ (1981). "Alphonse Laveran's discovery 100 years ago and today's global fight against malaria". J R Soc Med. 74 (7): 531–6. PMC 1439072. PMID 7021827.
- ↑ 3.0 3.1 3.2 Dutta HM, Dutt AK (1978). "Malarial ecology: a global perspective". Soc Sci Med. 12 (2D): 69–84. PMID 81525.
- ↑ Laveran CL (1982). "Classics in infectious diseases: A newly discovered parasite in the blood of patients suffering from malaria. Parasitic etiology of attacks of malaria: Charles Louis Alphonse Laveran (1845-1922)". Rev Infect Dis. 4 (4): 908–11. PMID 6750753.
- ↑ Ross R (1897). "Observations on a Condition Necessary to the Transformation of the Malaria Crescent". Br Med J. 1 (1883): 251–5. PMC 2432879. PMID 20756775.
- ↑ 6.0 6.1 6.2 Malaria Facts. CDC.gov accessed on 07/24/2014 [2]
- ↑ Seeman JI (2007). "The Woodward-Doering/Rabe-Kindler total synthesis of quinine: setting the record straight". Angew Chem Int Ed Engl. 46 (9): 1378–413. doi:10.1002/anie.200601551. PMID 17294412.
- ↑ 8.0 8.1 Kaufman TS, Rúveda EA (2005). "The quest for quinine: those who won the battles and those who won the war". Angew Chem Int Ed Engl. 44 (6): 854–85. doi:10.1002/anie.200400663. PMID 15669029.
- ↑ 9.0 9.1 9.2 9.3 "A Brief History of Malaria - Saving Lives, Buying Time - NCBI Bookshelf".
- ↑ 10.0 10.1 "WHO | Q&A on artemisinin resistance, SYSTEM DO NOT MOVE OR EDIT".
- ↑ 11.0 11.1 Mendis K, Rietveld A, Warsame M, Bosman A, Greenwood B, Wernsdorfer WH (2009). "From malaria control to eradication: The WHO perspective". Trop Med Int Health. 14 (7): 802–9. doi:10.1111/j.1365-3156.2009.02287.x. PMID 19497083.
- ↑ Okie S (2008). "A new attack on malaria". N Engl J Med. 358 (23): 2425–8. doi:10.1056/NEJMp0803483. PMID 18525039.
- ↑ RTS,S Clinical Trials Partnership. Agnandji ST, Lell B, Fernandes JF, Abossolo BP, Methogo BG; et al. (2012). "A phase 3 trial of RTS,S/AS01 malaria vaccine in African infants". N Engl J Med. 367 (24): 2284–95. doi:10.1056/NEJMoa1208394. PMID 23136909.
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Natural History, Complications & Prognosis
Diagnosis
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Treatment
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| Malaria | ||
 | ||
|---|---|---|
| Plasmodium falciparum ring-forms and gametocytes in human blood. | ||
| ICD-10 | B50 | |
| ICD-9 | 084 | |
| DiseasesDB | 7728 | |
| MedlinePlus | 000621 | |
| MeSH | C03.752.250.552 | |
Pathophysiology
Epidemiology & Demographics
Causes of Malaria
Diagnosis
History & Symptoms
Lab Tests
Treatment
Medical Therapy
Primary Prevention
References
External links
- National Geographic July 2007 Issue on Malaria
- WHO site on malaria
- Template:McGrawHillAnimation
- Johns Hopkins Malariology Open Courseware
- www.malariacontrol.net distributed computing project for the fight against malaria
- United States Centers for Disease Control - Malaria information pages
- Medline Plus - Malaria
- Interview with Dr Andrew Speilman, Harvard malaria specialist
- Malaria Consortium website
- GlobalHealthFacts.org Malaria Cases and Deaths by Country
- Survey article: History of malaria around the North Sea
- DriveAgainstMalaria.org, "World's longest journey to fight the biggest killer of children"
- Malaria on JHSPH OpenCourseWare
- Malaria Foundation International
- Malaria Atlas Project
- UNITAID, International Facility for the Purchase of Drugs (Wikipedia Article)
- BBC - Hopes of Malaria Vaccine by 2010 15 October 2004
- BBC - Science shows how malaria hides 8 April 2005
- History of discoveries in malaria
- Malaria. The UNICEF-UNDP-World Bank-WHO Special Programme for Research and Training in Tropical Diseases
- Malaria Vaccine Initiative
- "Vaccines for Development" - Blog on vaccine research and production for developing countries
- Medicines for Malaria Venture
- Malaria and Mosquitos - questions and answers
- Hisnets - Fighting Malaria: One Net At A Time
- Call for Increased Production of Long-Lasting Insecticidal Nets as Part of the U.N. Millenium Campaign
- Burden of Malaria, BBC pictures relating to malaria in northern Uganda
- Malaria: Cooperation among Parasite, Vector, and Host (Animation)
Template:Link FA Template:Protozoal diseases
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