After been bitten by an infected mosquito, the disease takes around 14 days to manifest. Common symptoms are fever, chills, vomiting, nausea, body ache, headache, cough and diarrhoea. The cycle of fever and chills usually repeats after 48 hours (this corresponds to the release of parasite from the blood cell). After a few cycles of fever the person also develops anaemia due to breakdown of red blood cells. The spleen which is an organ situated beneath the rib cage on the left side enlarges and is felt in the stomach.