Amazing Fact: Type O Blood Attracts Mosquitos0
The very first (many have followed) research study was done in 1972. This study showed that mosquitoes have a blood-type preference, favoring type O blood over type A or B blood. A followup study also looked at secretor status and concluded that mosquitoes prefer type O secretors above all. Scientists have isolated proteins on mosquitoes’ antennae that detect chemical markers emitted from peoples’ skin, but still don’t know why certain blood types are favored over others.