In order to extract blood from their victims more easily, mosquitoes have a very powerful anticoagulant protein in their saliva that they introduce into our bloodstream when they bite us.
In this way they prevent the platelets from forming a clot, ensuring that the blood does not stop flowing while they ingest it.
Since our immune system recognizes the proteins in mosquito saliva as foreign.
It releases histamine, and the area around the bite becomes inflamed, red, and warm and itchy.
In other words, a small allergic relationship is generated around the bite.
