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Democrats and so far it looks like he is going that way and looks like three or four presidents impeached depending how you count it. >> and whether the ukrainian request, had joe biden not declared presidency, because it does not hold any water with tweets from other republicans in the u.s. david, we will talk to you in a little bit again. stick around. kevin mccarthy is calling on nancy pelosi to suspend the impeachment inquiry. pelosi says not so fast. >> later, vice president mike pence co...

Other parts of the country as well. it is not localized just in one area which would make it easier of course to prevent these things. >> reporter: while quite rare the doctor says avoiding swimming in freshwater lakes, ponds and streams is the only guaranteed way of protecting yourself from the disease. >> reporter: not to submerge your head below the water. couple parents groups. talked about having nose clips. under $10. clip on your nose. if you are swimming in a body of water stop the water...

Type of brain disease in minnesota in the past five years. however, local officials insist its still safe to swim in the lake. >> its as safe as swimming in any lake in the nation. the fact that theres been one confirmed case from this lake does not make the lake more dangerous. >> reporter: the tious disease specialist at the mayo clinic. >> unfortunately when the cases occur they tend to make a lot of news. these are uncommon but very horrific kinds of infections that often end in the death of...

>> it is terrifying you pointed out. ryan pointed out. very rare as well. talking to a handful of cases over the last several years. look this is an amoeba one of the simplest organisms out there. the size 1/10 the size of a human hair to give you an idea. found in soil. its found in sediment and found in freshwater bodies. so, you know lakes, ponds. not found in the ocean. to clarify. and as ryan mentioned these are warm bodies of water typically. this used to happen exclusively in the south no...

Brain? >> this is really interesting. and sort of just pure mechanical standpoint. this is an amoeba that essentially goes up your nose. its usually forced up the nose. think about that someone diving into a body of water, somebody using something look a neti pot, irrigateing with untreated water. typically what happens. this amoeba travels up one of the nerves that actually goes up into the brain. typically the amoeba for their food they like to eat bacteria. if there is no bacteria they start ...

Significant irrigation of water into your nose youre not as much at risk. it could be somepeople have antibodies good at fighting the amoeba already. if they get an infection the body takes care of it. again, a hard thing to actually cause, to have it goes up your nose sort of latch on to thiack the brain. >> and literally eat the brain. all right, thank you so much. sanjay gupta. next jeanne moos talking to the parents of this little girl for the first time she got to see her parents.