QUESTION where did malaria come from? ANSWER Malaria is a disease caused by a single-celled parasite called Plasmodium. There are many species of Plasmodium, which infect many other animals as well as humans. The types of malaria which infect humans probably evolved from similar Plasmodium species in monkeys and apes; for example, P. vivax is closely related to several species of malaria … [Read more...]
Malaria Hosts
QUESTION Which are malaria hosts and how does malaria have an effect on one of them? ANSWER The parasite which causes malaria (called Plasmodium) requires two different hosts—a vertebrate intermediate host, such as a human, and an insect definitive host, also known as the vector. For the types of malaria which infect humans and other mammals, the vector is always a mosquito of the … [Read more...]
How many types of malaria are there?
QUESTION How many types of malaria are there? ANSWER There are four species of malaria parasite that commonly infect humans. These are: Plasmodium falciparum, P. vivax, P. ovale and P. malariae. In addition, a fifth species, P. knowlesi, is starting to draw public health attention as an infection in humans in south-east Asia, and particularly Borneo - previously, it was thought to only … [Read more...]
Monkeys Provide Malaria Reservoir for Human Disease in South-East Asia
Monkeys infected with an emerging malaria strain are providing a reservoir for human disease in Southeast Asia, according to recent research. The study confirms that the species has not yet adapted to humans and that monkeys are the main source of infection. Malaria is a potentially deadly disease that kills over a million people each year. The disease is caused by malaria parasites, which are … [Read more...]
Of Macaques and Men
Plasmodium knowlesi —a new challenge in the Roll Back Malaria Program? Mention of malaria often conjures images of infants hospitalized in Africa. Although most deaths from malaria are children under 5 in sub-Saharan Africa, there are many different types of malaria that put over half of the world’s population at risk in subtropical and tropical regions worldwide. There have historically … [Read more...]