It’s World War Z in miniature, and almost as gross. Scientists have found insect and viral parasites genetically encoded to control their hosts’ behavior. One is the parasitic virus that causes malaria; it controls mosquitoes, putting them on a famine-then-blood-feast cycle that helps the virus reach its next victim — possibly you. Researchers also discovered a virus that may control wasps that then turn ladybugs into zombie bodyguards for wasp larvae. Even Brad Pitt can’t keep these mind-suckers at bay.