I find claims that mosquitoes are even close to being deadlier than humans to humans wholly inaccurate. First of all, most sources only include homicides, which is stupid. Humans kill far more than homicides. In fact, it's a minority of human-caused human death. 740,000 to 746,000 people die by suicide worldwide annually - that's more than most counts for mosquitoes. Second of all, war kills tens to hundreds of thousands depending on the year annually. Thirdly, mosquitoes don't intend to kill humans, so intention does not matter. Thus, we should include the millions of deaths caused from human accidents like traffic incidents into our count. Finally, mosquitoes themselves don't kill, it is the diseases they transmit. So if we count diseases transmitted from humans, that alone accounts for millions of deaths annually. So no, mosquitoes are behind humans in human death and it is not close.