Several international organisations have set up ambitious objectives for large-scale malaria control. Finally, drugs that have been used at each stage are shown in the dashed boxes Chauhan and Srivastava, ; Olliaro, ; Korenromp et al.
This text is a summary of: In fact, malaria, a parasitic mosquito-borne disease, infects more than million people and kills more than two million people each year.
Since then, the efforts of several public health officials and malaria experts have resulted in the restricted use of DDT in Africa for malaria vector control only and not in agriculture Dugger, This does not mean that anti-malaria medication and personal protection measures should be neglected, simply that any traveller developing possible symptoms of malaria should seek medical advice despite having taken the prescribed precautions.
Northern Namibia is also a malarias area. It predominates in Africa; P. Every year, mosquito-borne diseases, such as malaria, yellow fever, dengue fever, viral encephalitis, and West Nile virus, cripple and kill millions of people.
At the same time, these cells protect the parasites from host immune responses. In areas with high transmission such as Africa south of the Saharathe most vulnerable groups are: The predominant parasite species is Plasmodium falciparum, which is the species that is most likely to cause severe malaria and death.
This parasite is transmitted by mosquito species belonging to the Anopheles genus and only by females of those species. The geographical area affected by malaria has shrunk considerably in the past 50 years.
However, symptoms may occur later in those who have taken antimalarial medications as prevention Nadjm et al.
Young children, who have not yet developed partial immunity to malaria Pregnant womenwhose immunity is decreased by pregnancy, especially during the first and second pregnancies Travelers or migrants coming from areas with little or no malaria transmission, who lack immunity.
Biologists are also using control measures, such as spraying DDT to kill mosquitoes, draining stagnant water, and using the widespread use of nets to contain the mosquito itself Herman, When the host has been bitten by a mosquito again, infected blood inters the mosquito.
When the vector injects her saliva into the human, it also injects ten percent of her sporozoite load. One main reason finding a cure for malaria is so hard is that different strains in different parts of the world require different drugs, all of which soon lose their effectiveness as the parasite evolves resistance to them Limited Imagination, Africa, Asia, and Central and South America are the areas with high numbers of malarial infections.
Proguanil may be started twenty-four hours before entering the malarious area, and two tablets must be taken every day.
Because the sexual cycle takes place in the mosquito, it is sometimes called the definitive host. Scientists too often find their drugs effectiveness wearing off as malarial parasites build tolerance to them Graham, Malaria’s Impact.
Malaria occurs mostly in poor tropical and subtropical areas of the world. In many of the countries affected by malaria, it is a leading cause of illness and death. Most malaria cases seem to cluster in the tropical climate areas extending into the subtropics, and malaria is especially endemic in Africa.
In eighty percent of all reported cases were in Africa, while the remainder of most cases came from nine countries: India, Brazil, Afghanistan, Sri-Lanka, Thailand, Indonesia, Vietnam, Cambodia, and China. The magnitude of malaria’s effect on growth is substantial: they find that Sub- Saharan African countries experience a reduction in income growth of percent annually because of malaria.
malaria essay Malaria is known as one of the world's deadliest dangerous diseases " Malaria parasites have been with us since the beginning of time, and fossils of mosquitoes up to thirty million years old show that malaria’s vector has existed for just as long.
Published: Mon, 21 May Generally, malaria is an infectious disease caused by Plasmodium which is a parasite that infects red blood cells. There are five types of malaria which are Plasmodium vivax, Plasmodium malariae, Plasmodium ovale, Plasmodium falciparum and Plasmodium knowlesi.
Malaria is a life-threatening disease caused by parasites that are transmitted to people through the bites of infected Anopheles mosquitoes.
The main burden of malaria (more than 90%) is in Sub-Saharan Africa with an estimated annual number of deaths over 1 million.Download