Answer:
Mosquitoes
Explanation:
According to the World Health Organization, about 725,000 people are killed every year by mosquito-borne diseases. Malaria alone affects 200 million, of which an estimated 600,000 die. Mosquitoes also carry dengue fever, yellow fever and encephalitis.
The sheer number of mosquitoes adds to the risk they pose to humans. Unlike many other dangerous creatures, they can be found in nearly every part of the world at various times of year, and at peak breeding season they outnumber every other animal except ants and termites.
https://www.bbc.com/news/world-36320744
