Mosquitoes carry the parasite which causes malaria in humans Worldwide malaria deaths may be almost twice as high as previously estimated, a study reports. The research, published in the British medical journal the Lancet, suggests 1.24 million people died from the mosquito-borne disease in 2010. This compares to a World Health Organisation (WHO) estimate for 2010 of 655,000 deaths. But both the new study and the WHO indicate global death rates are now falling. Read more here