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In 1964, a virus, later called Epstein–Barr virus (EBV) after the discoverers, was identified from the cancer cells. The virus was subsequently proved to be the direct cancer agent and is now classified as Group 1 carcinogen. [113] In 1989, it was realised that EBV requires other infections such as malaria to cause lymphocyte transformation.
Found worldwide, it causes a so-called "benign malaria", not nearly as dangerous as that produced by P. falciparum or P. vivax. The signs include fevers that recur at approximately three-day intervals – a quartan fever or quartan malaria – longer than the two-day (tertian) intervals of the other malarial parasite.
Human malaria is caused by single-celled microorganisms of the Plasmodium group. [10] It is spread exclusively through bites of infected female Anopheles mosquitoes. [10] [12] The mosquito bite introduces the parasites from the mosquito's saliva into a person's blood. [3] The parasites travel to the liver, where they mature and reproduce. [1]
Invertebrates spread bacterial, viral and protozoan pathogens by two main mechanisms. Either via their bite, as in the case of malaria spread by mosquitoes, or via their faeces, as in the case of Chagas' Disease spread by Triatoma bugs or epidemic typhus spread by human body lice. Many invertebrates are responsible for transmitting diseases.
Some of these can cause severe disease in primates, while others can remain in the host for prolonged periods without causing disease. [26] Many other mammals also carry Plasmodium species, such as a variety of rodents, ungulates, and bats. Again, some species of Plasmodium can cause severe disease in some of these hosts, while many appear not ...
Malaria infected nearly 250 million people globally in 2022 and killed more than 600,000, mostly children. It is caused by a parasite carried by mosquitoes and mainly infects people in tropical ...
Plasmodium knowlesi is a parasite that causes malaria in humans and other primates. It is found throughout Southeast Asia, and is the most common cause of human malaria in Malaysia. Like other Plasmodium species, P. knowlesi has a life cycle that requires infection of both a mosquito and a warm-blooded host.
The Environmental Working Group has found 21 oat-based cereals marketed to children to have "troubling levels" of the chemical. Study: 21 popular cereals found to have cancer-linked Roundup ingredient