Anyone can get malaria. However, most malaria cases occur among residents of countries where malaria is endemic, and among travelers to those countries. Pregnant women and children are most at risk in these areas. In pregnant women it can cause severe anaemia, miscarriages, stillbirths, low birthweight and maternal death. In non-endemic countries Malaria can be passed on from mother to ther unborn baby in the womb via the placenta. Those working in baggage handling at Airports and Docklands may too be more at risk in non endemic countries.

Yes there is. People who are carriers for the sickle cell gene have increased immunity against Malaria. This is due to the abnormal shape of the red blood cell making them un conducive to the Malaria parasite. However those who have the full form of sickle cell disease are of no benefit for being so as they will die of the sickle cell disease; it is just those that are carries of the sickle cell disease that benefit.

No, isolation is not required as the disease cannot be passed on from human to human.

Malaria should be treated as soon as any symptoms of the disease become present (see what are the symptoms of malaria page?) before it becomes severe and poses a threat to the person's life.

The Malaria parasite originally comes from chimpanzees and gorillaz.