>> reporter: these kissing bugs are anything but romantic. the nickname because they often bite people's faces attracted by their breathe. dr. sarah heimer studies the blood suck jess at texas a&m. >> they are elusive because they need a host. >> reporter: the bugs carry a parricide that could be deadly and show up as heart disease. they are found mostly in latin america and southern u.s. but a girl was bitten much farther north in delaware. >> there is a range of symptoms that makes it difficult to diagnose. >> reporter: those symptoms can include rash, fever and body aches. the bugs occasionally find their way into cracks in homes and emerge overnight. what's the difference between kissing bugs and bedbugs? >> bedbugs adapt to where people live in your bed or home. kissing bugs are bugs that live in the wild. >> reporter: so how can you protect yourself? the cdc says remove woodpiles