✔ 最佳答案
Firstly the mosquito uses an anti-coagulant,to stop clotting occurring. (I am aware that technically coagulation and agglutination are quite different things).
Secondly the mosquito can only drink one type of blood at a time. So even if they go onto another host moments later , the first lot has already started being metabolised.You have to remember the blood is being digested.
Whether agglutination occurs is hard to say .But it's unlikely ,though if it does ,it isn't enough to disrupt or hinder the processing of the food source.
This is a rudimentary survival necessity. As mosquitoes rely on blood protein for reproduction.
They've evolved to deal with various obstacles in their way.