When you get bitten by a mosquito this is how the mosquito needle finds your blood vessel. The mosquito’s needle acts like a homing beacon; it finds our blood vessels by detecting the chemicals they give off. The mosquito also injects chemicals into our vessels to stimulate blood flow. But it’s also what makes those itchy bumps appear after the mosquito gets its fill and leaves. It’s during this process that the mosquito can spread infection. When these insects take up our blood, they also leave behind traces of their own saliva. That saliva can contain viruses that get into our blood vessels, causing severe illnesses like dengue, West Nile virus, Zika, and chikungunya.
Mosquito Finds Blood Vessel
Video by Choumet et al, PLOS 2012