The mechanics of mosquito-born illness.  Wondering whether that mosquito bite could hold an unpleasant E*-surprise?  The key is that parasites have to have evolved specific mechanisms to allow the mosquito to be used as a carrier.  So in a sense it is evolution itself that protects us from the mosquito becoming a universal plague-bearing vector.  This fascinating half-pager also explains why the Ebola virus is highly unlikely to be transmitted by mosquitoes in the near future.  Getting bitten by mosquitos?  Don't worry, you're not going to get Ebola that way.  #ebola #evolution