Malaria is
caused by a one-celled animal, or protozoan, called Plasmodium.There are
4 types of human malaria; the one in Palm Beach County reported in this news story
has been identified as Plasmodium vivax.
The other species are P. falciparum, P.
ovale, and P. malariae.
Malaria is transmitted to humans by the bite of a female Anopheles when
she takes a blood-meal for the development of her eggs. Male mosquitoes do not feed
on blood. Both males and females feed on plant nectar.
Malaria causes more than 300 million acute illnesses and at least one million deaths
each year, mostly among young African children.
Malaria symptoms appear about 9 to 14 days after the infectious mosquito bite, although
this varies with different Plasmodium species.
Malaria produces recurrent chills, fever, headache, vomiting and other flu-like
symptoms. If drugs are not available for treatment of the parasites or if the parasites
are resistant to them, the infection can progress rapidly to become life threatening.
Malaria kills by destroying red blood cells and by clogging the capillaries that
carry blood to the brain (cerebral malaria).
Source of above information: Roll Back Malaria, World Health Organization online at
http://www.rbm.who.int/