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Plasmodium falciparum is a unicellular protozoan parasite of humans, and the deadliest species of Plasmodium that causes malaria in humans. [2] The parasite is transmitted through the bite of a female Anopheles mosquito and causes the disease's most dangerous form, falciparum malaria.
Plasmodium vivax is a protozoal parasite and a human pathogen.This parasite is the most frequent and widely distributed cause of recurring malaria. [2] Although it is less virulent than Plasmodium falciparum, the deadliest of the five human malaria parasites, P. vivax malaria infections can lead to severe disease and death, often due to splenomegaly (a pathologically enlarged spleen).
Artemether is an antimalarial drug for uncomplicated malaria caused by P. falciparum (and chloroquine-resistant P. falciparum) or chloroquine-resistant P. vivax parasites. [1] [7] Artemether can also be used to treat severe malaria. [2] The World Health Organization (WHO) recommends the treatment of uncomplicated P. falciparum with artemisinin ...
It is approved in the United States as a treatment and preventive measure against malaria. [6] The combination is considered to be more effective in treating malaria caused by Plasmodium falciparum than that caused by P. vivax, for which chloroquine is considered more effective, though in the absence of a species-specific diagnosis, the sulfadoxine-pyrimethamine combination may be indicated. [7]
The reason for this can possibly be accounted for by the lower number of merozoites produced per erythrocytic cycle, the longer 72-hour developmental cycle (compared to the 48-hour cycle of P. vivax and P. falciparum), the preference for development in older erythrocytes and the resulting earlier development of immunity by the human host. [2 ...
However, the WHO has recommended that a single dose of primaquine (0.25 mg/kg) is safe to give even in individuals with G6PD deficiency, for the purpose of preventing transmission of P. falciparum malaria. [14] Primaquine is contraindicated in pregnancy, because the glucose-6-phosphate dehydrogenase status of the fetus would be unknown. [4]
Hence, its geographical distribution is overlapping with areas of high malaria prevalence rates and the occurrence of drug resistant Plasmodium falciparum. [5] P. falciparum is one of the four main protozoan parasites that cause malaria and is one of the leading causes of malaria deaths. This species complex is of high medical importance for ...
This is a first fixed-dose artemisinin-based combination therapy to be granted a positive scientific opinion for efficacy, safety and quality from European Medicines Agency (EMA) under Article 58 for the treatment of P. falciparum and P. vivax in adults and children over 20 kg based on five multi-centre phase III trials conducted in Africa and ...