Also, some types of malaria can recur for years if not treated appropriately. Rarely, malaria can also be transmitted from an infected mother through the placenta to her baby, and by blood transfusions from an infected donor. Very rarely, malaria has been spread in the U.S. by infected mosquitoes that arrive on international airplanes, or by mosquitoes here that have bitten an infected person. The parasite can be seen in blood viewed under a microscope. Malaria can be very dangerous and even fatal if it is not treated.
Early treatment reduces the chances of complications.
See your doctor right away if you think you may have malaria. Make sure you inform your doctor of any recent travel and any medications you took.