B is for Blood stream Once a mosquito has bitten and the malaria parasites reach the liver , the parasites divide and create thousands of mature parasites . World Malaria Day on April 25 highlights the danger of malaria and calls for action . According to the WHO there were 247 million cases of malaria in 2006 . Comment:
World Malaria Day on April 25 highlights the danger of malaria and calls for action . According to the WHO there were 247 million cases of malaria in 2006 . Comment: